Exploration and Its Consequences
Events · 221
- Before 1500 CEHistory of Brazil
Millions of Indigenous People Inhabit Brazil Before Contact
Long before any European reached the coast, the territory that became Brazil held a native population in the millions, divided among hundreds of tribes and separate language groups. The Library of Congress country study records four major language families: Ge, Tupi, Carib, and Arawak speakers, plus the Nambicuara. The Tupi speakers, who had displaced the Ge along the coast, were the peoples the Portuguese met first in 1500. Population estimates vary widely: demographer William M. Denevan suggested 3,625,000 people for Brazil's Amazon Basin alone, with another 4,800,000 in other regions, while historian John Hemming estimated more conservatively at 2,431,000 for Brazil as a whole. These figures are reconstructions, not counts, and scholars disagree on them by millions.
Reputable source · 2 sources - c. 1111 CEThe Aztec Empire
The Mexica Leave Their Legendary Homeland of Aztlan
According to Aztec accounts recorded after the Spanish conquest, the Mexica people set out from Aztlan, a homeland whose location is unknown and may be entirely legendary, guided by their patron god Huitzilopochtli. The Yale-New Haven Teachers Institute's account of the migration traces the Mexica first to Chicomoztoc, the Place of Seven Caves, and describes a journey that took them through the Valley of Mexico by 1168 and lasted nearly a century before it ended. Along the way the Mexica were driven off repeatedly by established city-states that saw them as poor, unwelcome newcomers with no land of their own. Huitzilopochtli promised his followers an island in a lake marked by an eagle on a cactus, a sign they would carry as their founding myth for the rest of their history.
Reputable source · 2 sources - c. early 13th century (legendary)The Inca Empire
Manco Capac Leads the Legendary Founding of Cuzco
According to Inca tradition, the creator god Viracocha brought the first people into being at Lake Titicaca, and the Inca specifically were born at Tiwanaku from the sun god Inti. In one version of the story the first Inca, Manco Capac, and his sister-wife Mama Ocllo emerged from a sacred cave called Tampu T'oqo, 'the House of Windows,' near a place called Pacariqtambo south of Cuzco, carrying a golden staff Inti had told them to plant wherever it sank into the earth. EBSCO's Research Starters entry describes Manco Capac as a curaca, a local lord, who led a migration from Pacaritambo into the Cuzco valley in the early 13th century, organizing his own family and neighboring clans into ten kin groups called ayllus. Along the way the migrants defeated the valley's existing occupants, the Chanca, with help the Incas said came from stone warriors called pururaucas, and Manco Capac then drove out the people of Acamama and founded Cuzco as his capital.
Reputable source · 2 sources - c. 1200-1400The Inca Empire
Cuzco Grows from a Village into a Regional Capital
Archaeology at Cuzco shows people living in the valley long before any Inca state existed. World History Encyclopedia notes that settled populations occupied the site from at least 500 BCE, with the pre-Inca settlement of Chanapata leaving behind decorated pottery but no large buildings or metalwork. Cuzco itself only began to take real shape as a town around 1200 CE and did not become a capital of any significance until the reign of Inca Roca in the 14th century, when successive rulers began building their own walled palace compounds. For most of this period the Inca were one small kingdom among several rival highland groups in the Cuzco valley and the surrounding basin, with no special claim to regional dominance.
Reputable source · 2 sources - c. 1325 CEThe Aztec Empire
An Eagle on a Cactus Marks the Site of Tenochtitlan
The Mexica's migration story reaches its climax with the killing of a rebel named Copil, son of Huitzilopochtli's sister Malinalxochitl, who had led an uprising against the wandering clan. World History Encyclopedia recounts that Huitzilopochtli ordered Copil's heart thrown as far as possible into Lake Texcoco, and that wherever it landed would mark where the Mexica should build their home. An eagle sitting on a prickly-pear cactus and devouring a snake appeared at that spot on a small, unpromising island in the lake, exactly as the god had promised generations earlier. The traditional date most often cited for the founding is 1325, though World History Encyclopedia's own reference material and other chroniclers give 1345, a discrepancy that reflects genuine disagreement among the surviving pictorial annals rather than a settled fact. Luis Barjau, former head of ethnohistory at Mexico's National Institute of Anthropology and History, has argued for March 13, 1325 specifically, a date first popularized for the city's 600th anniversary celebration in 1925.
Reputable source · 2 sources - 1325-1400s CEThe Aztec Empire
Chinampas and Causeways Turn a Swamp Into a Capital
The island the Mexica settled had almost no farmland, so they built it themselves using chinampas, artificial islands constructed by driving wooden posts into the shallow lakebed, weaving reed and branch fences called chinamitl between them, and filling the enclosures with mud dredged from the lake bottom and layered with vegetation. World History Encyclopedia describes chinampas ranging from 8 to 100 meters long and 2 to 25 meters wide, with willow trees planted at the corners so their roots would anchor the structure. The nutrient-rich lake water and canal mud made these plots extraordinarily productive, allowing multiple harvests a year of maize, beans, squash, and flowers. As the city grew, three causeways running north, east, and west connected the island to the mainland, built with removable wooden bridges over gaps so canoes could pass and so the causeways could be broken during an attack.
Reputable source · 2 sources - c. 1375-1426 CEThe Aztec Empire
The Mexica Become Tribute-Paying Vassals of the Tepanec
For roughly its first century, Tenochtitlan was not an independent power but a subject city paying tribute to Azcapotzalco, capital of the Tepanec people, under their ruler Tezozomoc. In 1375 the Mexica installed their first tlatoani, Acamapichtli, and the city grew in size and organization, but it did so as a client state supplying warriors for Tepanec campaigns. Indigenous Mexico's research on the period describes the Mexica assisting Azcapotzalco's conquest of rival Texcoco in 1418, helping capture the city and kill its king, Ixtlilxochitl I, whose young son Nezahualcoyotl escaped into hiding. In exchange for their loyalty, the Mexica were rewarded with tribute rights over conquered territory, including a claim on Texcoco itself, and learned Tepanec methods of warfare and administration that they would later turn against their patrons.
Reputable source · 2 sources - 21 August 1415The Age of Exploration
Portugal Captures Ceuta
King John I of Portugal assembled a fleet of roughly 240 ships carrying about 20,000 soldiers and over 5,000 knights to attack Ceuta, a fortified Muslim port on the North African coast across the strait from Gibraltar. The king's three sons, including 21-year-old Prince Henry, commanded parts of the force. The Portuguese had spread word that the fleet was bound for a fight with the Dutch over a trade dispute, so Ceuta's defenders were caught unprepared. The city fell in a single day of fighting on 22 August, followed by looting and killing. Henry helped lead troops ashore and was knighted at Ceuta afterward, along with his brothers. The Portuguese soon found the conquest less profitable than expected: Muslim merchants simply rerouted their trade further down the coast to Tangier, so Ceuta lost the commerce Portugal had hoped to capture.
Reputable source · 2 sources - 1428 CEThe Aztec Empire
The Tepanec War Ends Mexica Subjugation
When Tezozomoc died, his son Maxtla seized the Tepanec throne and moved against the very allies who had helped Azcapotzalco dominate the valley, blockading Tenochtitlan and raising its tribute demands under the new Mexica ruler Itzcoatl, while forcing Texcoco's king Nezahualcoyotl into exile. Rather than accept renewed subjugation, Tenochtitlan, Texcoco, and the smaller city of Tlacopan, joined for a time by Huexotzinco, went to war against Azcapotzalco in 1427. The coalition defeated the Tepanec the following year and destroyed Azcapotzalco as an independent power. History Crunch's summary of the alliance describes Huexotzinco withdrawing from the coalition after the victory, leaving Tenochtitlan, Texcoco, and Tlacopan to formalize their partnership.
Reputable source · 2 sources - 1428-1430 CEThe Aztec Empire
Itzcoatl and Tlacaelel Form the Triple Alliance
Following their defeat of Azcapotzalco, Tenochtitlan, Texcoco, and Tlacopan formalized their wartime coalition into a permanent pact known as the Triple Alliance, with Itzcoatl ruling Tenochtitlan and his nephew Tlacaelel serving as cihuacoatl, the chief adviser and effectively co-architect of the new state. World History Encyclopedia describes the arrangement: conquered territory and its tribute were divided among the three cities, with two shares going to Tenochtitlan and Texcoco and one to the smaller Tlacopan. Tenochtitlan's ruler took the title huey tlatoani, or high king, and the city increasingly dominated the alliance in practice even though the pact treated all three as partners. Tlacaelel, who would go on to advise four successive Mexica rulers without ever becoming tlatoani himself, is credited by later chroniclers with designing much of the alliance's religious and administrative machinery.
Reputable source · 2 sources - c. 1430 CEThe Aztec Empire
Itzcoatl Orders the Old Codices Burned
Soon after the Triple Alliance's founding, Itzcoatl ordered the burning of the existing pictographic codices that recorded the Mexica's earlier history, according to the Florentine Codex compiled decades later under the Spanish friar Bernardino de Sahagun. History of Information's summary of the episode describes this as a deliberate act to develop a state-sanctioned history that venerated Huitzilopochtli as the Mexica's central god, and later chroniclers attribute much of the intellectual work behind this rewriting to Tlacaelel, who is said to have argued the old records contained falsehoods unworthy of the new empire. The reasoning attributed to Itzcoatl in the Florentine Codex is that it was not fitting for common people to know the old paintings, since the true history could be dangerous knowledge in the wrong hands.
Reputable source · 2 sources - 1431 CEThe Aztec Empire
Nezahualcoyotl Becomes Tlatoani of Texcoco
Nezahualcoyotl, whose father Ixtlilxochitl I had been killed when Azcapotzalco conquered Texcoco in 1418, spent years in hiding and exile among Mexica relatives before officially becoming tlatoani of Texcoco in 1431, according to World History Encyclopedia's chronology of the city. As ruler of a city that reached a population of around 45,000, Nezahualcoyotl built a reputation as a poet, legislator, and patron of learning, issuing a law code and establishing what World History Encyclopedia describes as one of four councils of government specifically dedicated to promoting science and the arts. His palace, covering more than a square mile, included dedicated quarters for historians and poets and a library, and Texcoco under his rule became known as a center of culture within the Triple Alliance even as Tenochtitlan grew into the dominant military and economic power.
Reputable source · 2 sources Gil Eanes Rounds Cape Bojador
For twelve years, ships sent south by Prince Henry had failed to get past Cape Bojador on the West African coast, turning back rather than risk the reefs, shallow water, and the strong currents and headwinds that made the return trip look impossible. In 1434, the Portuguese captain Gil Eanes solved the problem by sailing his caravel well out into the open Atlantic before turning south, away from the coastline entirely, then used the wind patterns to loop back to Portugal after passing the cape. The technique, later called the volta do mar, meant a ship no longer had to fight headwinds along the coast to get home.
Reputable source · 2 sources- 1438-1471The Inca Empire
Pachacuti Rebuilds Cuzco and Founds the Imperial State
After securing Cuzco, Pachacuti set about remaking it as an imperial capital. He drained the swampy northern part of the city, built a new ceremonial center there, raised himself a palace called Kunturkancha, rebuilt the Temple of Inti at the Coricancha in fine stonework, and began the fortress complex of Sacsayhuaman on the high ground protecting the city's northern approach. He also built fortified way-stations at strategic points such as Pisac and Ollantaytambo. Beyond construction, Pachacuti introduced the systems of tribute and forced labor that would fund the empire, built a network of storehouses called qollqa to guard against famine, created a rule that the next ruler would be chosen from the sons of a nominated principal wife to reduce succession disputes, and had scribes record important episodes of Inca history on painted tablets kept in a restricted building in the capital.
Reputable source · 2 sources - c. 1438The Inca Empire
Pachacuti Defeats the Chanka and Seizes the Throne
In the early 15th century the Chanka, a rival highland people, attacked Cuzco. According to World History Encyclopedia's account of the semi-legendary tradition, the reigning Inca ruler Viracocha Inca and his heir Inca Urco judged the city indefensible and fled. A younger son, then known as Cusi Yupanki, stayed with a small band of loyal warriors and, inspired by a vision he attributed to the sun god Inti, organized a defense that drove the Chanka out of Cuzco. Cusi Yupanki took the throne as the ninth Inca ruler and adopted the name Pachacuti, meaning 'Reverser of the World' or 'Earth-shaker,' a term the Inca also used for the periodic cosmic upheavals they believed reshaped history. The World History Encyclopedia dates the Chanka defeat to 1438, calling it an event with a real historical basis beneath its legendary telling.
Reputable source · 2 sources A Portuguese Raiding Party Sells the First Captive Africans in Lisbon
In 1441, the Portuguese captain Antao Goncalves, sailing under Prince Henry the Navigator's program of exploration down the West African coast, kidnapped a man and a woman from the Rio de Oro region of what is now Western Sahara. When he offered to trade them back, their community gave him ten enslaved sub-Saharan Africans in exchange, whom Goncalves carried to Portugal for resale. It was a small, almost improvised transaction, a handful of people traded on the spot rather than a planned commercial voyage. But it established the pattern the Portuguese crown would formalize within a few years: African captives, purchased or seized along the coast, shipped back to Iberia and sold. Three years later a much larger expedition under Lancarote de Freitas would turn that pattern into an organized market at Lagos.
Reputable source · 2 sources- August 8, 1444The Atlantic Slave Trade
Zurara Chronicles the First Slave Auction at Lagos
On August 8, 1444, six caravels commanded by the merchant Lancarote de Freitas returned to the Portuguese port of Lagos carrying 235 captive Africans seized in raids along the Mauritanian coast. The royal chronicler Gomes Eanes de Zurara, writing within a decade of the event, described what followed on the beach: officials arrived to divide the captives into shares for the crown, the backers of the voyage, and Prince Henry, tearing apart families in the process. Zurara wrote that the officials had to "part fathers from sons, husbands from wives, brothers from brothers," and that mothers threw themselves over their children rather than be separated from them. Zurara, who supported the trade and framed it as bringing captives to Christian salvation, still could not write the scene without recording the grief of the people being divided.
Primary source · 2 sources - c. 1440-1469 CEThe Aztec Empire
Moctezuma I Expands the Empire and Invents the Flower War
Under Moctezuma I, who ruled Tenochtitlan from 1440 to 1469, the Triple Alliance pushed its conquests outward, establishing garrisons as far as Mitla in the Oaxaca Valley by around 1450, according to World History Encyclopedia's chronology of the period. Against Tlaxcala, Huexotzinco, and Cholula, city-states that refused outright submission but could not be easily crushed either, Moctezuma I is credited with formalizing the xochiyaoyotl, or Flower War, a form of scheduled ritual combat that took captives for sacrifice while serving political ends short of full conquest. These wars let neighboring rivals remain nominally independent while feeding Tenochtitlan's need for sacrificial captives and giving Aztec warriors a controlled setting to build reputations through captures rather than kills.
Reputable source · 2 sources - 15th-16th century CEThe Aztec Empire
Human Sacrifice at the Templo Mayor: Belief and Disputed Scale
Aztec religion held that the gods had sacrificed themselves to create the world and the sun, and that humans owed a debt of blood and hearts to keep the sun rising and the world from collapsing back into chaos. World History Encyclopedia describes the practice as neither unique to the Aztecs, since the Olmec and Maya practiced human sacrifice earlier, nor a simple invention of Spanish propaganda, since the Aztecs clearly took it to a larger scale than their predecessors. The specific death tolls come almost entirely from Spanish chroniclers writing after the conquest: figures cited by these sources range from Zumarraga's 20,000 a year to Gomara's 50,000 to Las Casas's claim of 50,000 to 100,000, numbers modern historians treat with real skepticism since exaggerating Aztec bloodshed served to justify Spanish conquest and colonial rule to audiences back in Europe. World History Encyclopedia's own assessment lands on hundreds to perhaps thousands of victims sacrificed annually at major religious sites, a figure still large by any standard but far below the highest Spanish claims.
Reputable source · 2 sources - mid-15th centuryThe Inca Empire
The Coricancha Becomes the Empire's Golden Temple to the Sun
The Coricancha, also called the Golden Enclosure, was Cuzco's central religious complex and the Inca empire's most sacred site, dedicated to Inti the sun god along with the creator god Viracocha and the moon goddess Quilla. Its construction is generally credited to Pachacuti, who rebuilt an older, pre-imperial shrine on the site into a stone complex whose interior and exterior walls were covered with gold sheets, reportedly 700 plates half a meter square and 2 kilograms each, on the Temple of the Sun alone. Inside stood a gold statue of Inti called Punchao, shown as a small seated boy with a hollow torso used to store the cremated organs of dead Inca rulers; it was carried outside each morning and returned to its shrine at night. From the complex radiated 41 sacred alignments called ceques linking 328 shrines across the region, and conquered peoples' captured religious relics were stored here, functioning as a kind of hostage collection that enforced compliance with Inca rule.
Reputable source · 2 sources - c. 1450The Inca Empire
Machu Picchu Is Built as Pachacuti's Royal Estate
High in the Urubamba Valley north of Cuzco, Pachacuti founded the settlement now known as Machu Picchu, 'old hill,' around 1450 as his personal imperial estate. World History Encyclopedia describes competing theories about its purpose, fortress, retreat, symbol of Inca power, ceremonial site, but notes the architecture is dominated by religious structures, including the Intihuatana carved stone used for solar observations and a chamber carved from bedrock as a shrine to Inti. The site held perhaps 1,000 residents at its peak and was linked to nearby valley settlements by a dedicated road. On Pachacuti's death ownership passed to his descendants. The Inca abandoned the site before the Spanish conquest, and Pizarro's forces never found it. UNESCO's World Heritage listing calls it probably the most amazing urban creation of the empire at its height, its walls and terraces built to look like extensions of the mountain's own rock.
Reputable source · 2 sources - c. 1450s onwardThe Inca Empire
Sacsayhuaman's Massive Walls Take Shape Above Cuzco
Construction of the Sacsayhuaman complex on the high ground above Cuzco began under Pachacuti or, by some accounts, his son Topa Inca Yupanqui, and continued under later rulers. World History Encyclopedia's entry on the site states 20,000 laborers were conscripted under the Inca's tribute-labor system to build it, working in rotation, with 6,000 assigned to quarrying and 4,000 digging trenches and laying foundations. The finished walls used polygonal blocks, some over four meters tall and weighing more than 100 tons, cut and fitted so precisely that no mortar was needed. Workers shaped the stone with harder stone and bronze tools, moved blocks using ropes, log rollers, levers, and earthen ramps, and built the walls in a zigzag pattern stretching more than 540 meters that let defenders catch attackers in crossfire.
Reputable source · 2 sources - 1454-1487 CE (final major phase)The Aztec Empire
The Twin Shrines of the Templo Mayor Honor War and Rain
At the heart of Tenochtitlan's sacred precinct stood the Templo Mayor, called Hueteocalli by the Aztecs, a pyramid platform roughly 60 meters high topped by two side-by-side shrines reached by separate staircases. World History Encyclopedia describes the north shrine as dedicated to Tlaloc, god of rain, marked by steps painted blue and white for water, while the south shrine honored Huitzilopochtli, god of war and the sun, with steps painted red for blood and war. The Tlaloc temple aligned with the summer solstice, symbolic of the rainy season, while Huitzilopochtli's aligned with the winter solstice, marking the traditional start of the campaign season. Archaeologists working the site since Mexico City's Proyecto Templo Mayor began in 1978 have identified at least seven successive construction phases, each king rebuilding and enlarging the temple over the one before, meaning the structure the Spanish saw in 1519 encased generations of earlier temples inside it.
Reputable source · 2 sources - January 8, 1455The Atlantic Slave Trade
Pope Nicholas V Grants Portugal Religious Cover to Enslave Africans
On January 8, 1455, Pope Nicholas V issued the papal bull Romanus Pontifex, following an earlier bull, Dum Diversas, in 1452. Together the two documents granted King Afonso V of Portugal the right to invade, conquer, and enslave non-Christian peoples encountered south of Cape Bojador on the West African coast, and gave Portugal an exclusive claim over trade there against other Christian powers. The bull framed enslavement as a vehicle for converting Africans to Catholicism, language church leaders used to argue slavery served as what one Lowcountry Digital History Initiative essay calls a natural deterrent and Christianizing influence on people they described as barbarous. No European army ever occupied the territory the bull described. Portugal instead pursued the trade it authorized through commerce, buying captives from African merchants and rulers along existing trade networks rather than by conquest.
Primary source · 2 sources - 15th century CEThe Aztec Empire
Quetzalcoatl, Tlaloc, and the Aztec Pantheon
Aztec religion recognized a large pantheon inherited and adapted from earlier Mesoamerican cultures, with Huitzilopochtli as the Mexica's own war and sun god sitting alongside older, widely shared deities. World History Encyclopedia describes Quetzalcoatl, the Plumed Serpent, as god of wind, of the priesthood, and of learning, science, and the arts, a deity whose worship long predated the Aztecs and stretched back to earlier Mesoamerican civilizations including the Toltecs. Tlaloc, the rain god associated with mountains, caves, and springs, was considered old enough that his cult predated even Teotihuacan, centuries before the Aztecs arrived in the valley. The Templo Mayor's sacred precinct at Tenochtitlan also housed dedicated temples to Tezcatlipoca and Quetzalcoatl alongside the main shrines to Huitzilopochtli and Tlaloc, reflecting how thoroughly the Mexica absorbed older regional gods into their own state religion rather than replacing them.
Reputable source · 2 sources - 19 October 1469The Spanish Empire
Ferdinand of Aragon Marries Isabella of Castile
Isabella, heir to the throne of Castile, wanted Ferdinand of Aragon as her husband because uniting two neighboring kingdoms with similar customs and laws made political sense for Castile. Her half-brother King Henry IV had approved other suitors and required his consent to any marriage, so Isabella wrote asking permission. Henry never answered. She married Ferdinand anyway on 19 October 1469 in Valladolid, where the two had met for the first time only days earlier. Because Ferdinand and Isabella were second cousins, both descended from John I of Castile, they needed a papal dispensation from Sixtus IV to marry under canon law. The 1469 Marriage Concession that accompanied the wedding stated that Castile belonged to Isabella alone: Ferdinand agreed he would never separate their children from her and that the couple's main residence would be Castile.
Reputable source · 2 sources - 15th century CEThe Aztec Empire
Pochteca Merchants and the Great Market of Tlatelolco
The pochteca were a hereditary class of professional merchants who traded over long distances for the Aztec state, specializing in precious goods unavailable in the Valley of Mexico: tropical bird feathers, gold, turquoise, shells, greenstone, cacao beans, and exotic animal skins, according to World History Encyclopedia's account of Aztec society. They were supervised by the most experienced traders among them, the pochtecatlatoque, who administered trade and settled disputes among merchants in their own dedicated courts, and a related group called the tlaltlani traded specifically in slaves destined for sacrifice, a role that brought them particular wealth and privilege. Because pochteca traveled constantly beyond the empire's formal borders to reach distant markets, they were also positioned to bring back political and military information about the peoples they traded with, a secondary function noted across multiple accounts of the class. Their commercial hub inside the capital was the market at Tlatelolco, Tenochtitlan's twin city built on the same island, which World History Encyclopedia's description of Tenochtitlan notes sold goods brought in from all corners of Mesoamerica.
Reputable source · 2 sources - 1471-1493The Inca Empire
Topa Inca Yupanqui Doubles the Size of the Empire
Pachacuti's son Topa Inca Yupanqui, also written Thupa Inca Yupanqui, took the throne around 1471 and is credited by World History Encyclopedia with expanding Inca territory by roughly 4,000 kilometers, extending its reach from Ecuador in the north down toward Chile and Argentina in the south. He had already been active as a commander under his father, leading campaigns into the Chimu civilization's territory on the northern coast, before assuming full rule himself. By the end of his reign the empire had grown from Pachacuti's regional Cuzco-based kingdom into a territory spanning most of the length of the Andes, encompassing dozens of conquered peoples with their own languages and customs.
Reputable source · 2 sources - 19 January 1482The Age of Exploration
Portugal Builds Elmina Castle on the Gold Coast
By 1471, Portuguese ships had reached the stretch of West African coast that traded so much gold that they named it the Gold Coast. To protect the trade from European rivals, King John II sent Diogo de Azambuja with ten ships, 500 soldiers and servants, and 100 stonemasons and carpenters, along with pre-cut stone shipped from Portugal, to build a permanent fort. The fleet arrived on 19 January 1482. Azambuja negotiated with the local Akan chief, Kwamin Ansah, who was reluctant to allow a permanent European settlement but agreed after gifts and pressure. The result, Castelo de Sao Jorge da Mina (St. George of the Mine Castle), became the first European trading post on the Gulf of Guinea and the oldest European building still standing in sub-Saharan Africa.
General source · 2 sources - 1486-1502 CEThe Aztec Empire
Ahuitzotl Doubles the Empire's Territory
Ahuitzotl took the throne of Tenochtitlan in 1486 after his half-brother Tizoc was removed, reportedly poisoned, following a weak reign marked by failed campaigns against the Tarascans. World History Encyclopedia describes Ahuitzotl as youthful, strong, and audacious, and he proved to be one of the most effective military commanders in Aztec history, pushing the empire's borders into Oaxaca, Guerrero, and Veracruz and, according to some accounts, as far south as parts of modern Guatemala. His campaigns more than doubled the territory under Triple Alliance control and brought in captives and tribute at a scale not previously reached, funding building projects across the empire's core cities. Ahuitzotl also used mass public sacrifice of captured enemies as a deliberate tool of intimidation, designed to terrify visiting rulers of newly conquered territories into passive acceptance of Aztec authority rather than continued resistance.
Reputable source · 2 sources - 1487 CEThe Aztec Empire
The Templo Mayor Is Completed and Dedicated With Mass Sacrifice
In 1487 the Templo Mayor reached what World History Encyclopedia's own site chronology records as its completed form, inaugurated with a mass sacrifice of captives that later Spanish colonial sources put at 20,000 people over four days, using eight teams of priests working in relay according to the account preserved by the Yale-New Haven Teachers Institute. This figure, like most large Aztec sacrifice tolls, comes from post-conquest chronicles and cannot be independently verified against a contemporary record, and modern historians generally treat it as inflated even while accepting that a genuinely large mass sacrifice took place to mark the occasion. The event fell only five years before Columbus's first voyage reached the Caribbean, meaning the temple's completion and the Spanish arrival in the Americas were separated by less than a single generation.
Reputable source · 2 sources - early 1488The Age of Exploration
Bartolomeu Dias Rounds the Cape of Good Hope
Bartolomeu Dias left Lisbon in August 1487 with two caravels and a supply ship, commanding the Sao Cristovao himself. Sailing down the African coast, his fleet was driven far out to sea by storms; when Dias turned east expecting to find land, there was none, so he turned north and made landfall past the continent's southern tip without realizing he had rounded it. Dias named the point the Cape of Storms for the weather that nearly wrecked his ships. King John II later renamed it the Cape of Good Hope, since it opened the prospect of a sea route to India. Dias got back to Lisbon in December 1488 and reported to the king.
Reputable source · 2 sources - 2 January 1492The Spanish Empire
Granada Falls and the Reconquista Ends
The Emirate of Granada was the last Muslim territory left in Iberia after a Christian reconquest that had captured Cordoba in 1236, Valencia in 1238, and Seville in 1248. Granada survived for over two centuries by paying tribute to Castile, but the Granada War (1482-1492) between the Catholic Monarchs and the Nasrid dynasty ended that arrangement. Internal civil war crippled Granada while Ferdinand and Isabella's forces stayed unified. On 2 January 1492, Muhammad XII, known as Boabdil, surrendered the Emirate of Granada, the city of Granada, and the Alhambra palace to Castilian forces, ending 770 years of Muslim rule in Iberia that had begun with the 8th-century Moorish conquest of Visigothic Spain.
Reputable source · 2 sources - 31 March 1492The Spanish Empire
The Alhambra Decree Expels the Jews of Spain
On 31 March 1492, in the city of Granada only months after its conquest, Ferdinand and Isabella issued the Alhambra Decree, also called the Edict of Expulsion, ordering unconverted Jews out of every territory under their joint crowns by 31 July of that year. The decree aimed to stop unconverted Jews from influencing conversos, Jews who had already converted to Christianity, into secretly reverting to Judaism. Modern estimates place the number expelled between 40,000 and 200,000 out of a Jewish population of roughly 300,000, with many others choosing conversion over exile; the figures remain debated because contemporary records are incomplete. Those who left scattered mainly to Italy, Greece, Turkey, and North Africa, carrying Spanish Jewish culture into what became the Sephardic diaspora.
Primary source · 2 sources - 12 October 1492The Age of Exploration
Columbus Sails West and Reaches the Bahamas
After years of failing to find a sponsor, the Genoese sailor Christopher Columbus won backing from King Ferdinand and Queen Isabella of Spain and departed in August 1492 with 87 men on three ships, the Nina, the Pinta, and the Santa Maria. He intended to reach Asia by sailing west across the Atlantic. On 12 October, land was sighted; Columbus named the island San Salvador, though the people already living there called it Guanahani. He believed he had reached islands off Asia and proposed that nearby Cuba was part of China. He went on to name another island Hispaniola, and in January 1493 sailed back to Spain to report his findings.
Primary source · 2 sources - 12 October 1492The Spanish Empire
Columbus Reaches the Caribbean Under the Spanish Crown
Christopher Columbus spent years failing to find a sponsor for a westward voyage to Asia before Ferdinand and Isabella, fresh from completing the Reconquista, agreed to back him. The royal provision authorizing his voyage was read publicly at the Church of Saint George in Palos de la Frontera on 23 May 1492, and Columbus departed in August with three ships. Land was sighted on 12 October 1492; Columbus named the island San Salvador, though the Indigenous Lucayan people who lived there called it Guanahani. Convinced he had reached islands off Asia, he went on to name Hispaniola and returned to Spain in January 1493 to report his findings, having secured in advance a lavish agreement: if he succeeded, he would be knighted, appointed Admiral of the Ocean Sea, made viceroy of any lands found, and awarded ten percent of any new wealth.
Primary source · 2 sources - c. 1493, mature imperial systemThe Inca Empire
Tambo Waystations and Chasqui Runners Keep the Empire in Contact
Along the road network the Inca built two tiers of rest stops: small stations called chaskiwasi spaced roughly every 20 kilometers where ordinary travelers could shelter, and larger, more elaborate complexes called tambos serving as administrative and supply centers. Messages moved through a relay system of runners called chasquis, who World History Encyclopedia describes as operating in short bursts, handing information to a fresh runner stationed every six to nine kilometers so the message never slowed for one person's endurance. Using this method, information, and even perishable goods like fresh fish or seafood destined for Inca nobles' tables, could travel up to 240 kilometers in a single day. Because messages passed through many hands and oral retellings, runners likely carried quipu cords alongside their spoken message as a memory aid to help preserve its exact content.
Reputable source · 2 sources - c. 15th-16th centuryThe Inca Empire
Capacocha: Children Sacrificed on the Empire's Highest Peaks
The Inca practiced capacocha, a ritual in which selected children, often from elite or provincial families, were taken from their communities, brought through a period of ceremony, and then sacrificed, frequently at high-altitude shrines on mountain summits considered sacred. In 1999, archaeologists Johan Reinhard and Constanza Ceruti discovered three child mummies near the 22,110-foot summit of the Llullaillaco volcano on the Argentina-Chile border, since named the Llullaillaco Maiden, the Llullaillaco Boy, and the Lightning Girl. National Geographic reported that hair analysis of the Maiden showed she had consistently used coca at a high level during the last year of her life, with alcohol consumption surging sharply only in her final weeks, a pattern researchers read as evidence of a year of preparatory ceremonies that ended with the children being deliberately sedated, allowed to fall asleep, and left in a stone tomb roughly 1.5 meters underground to die of exposure.
Reputable source · 2 sources - c. 1493, at its territorial heightThe Inca Empire
Tawantinsuyu: The Four Regions Governed from Cuzco
The Inca called their empire Tawantinsuyu, 'the four regions' or 'the four parts together.' Cuzco sat at the notional center of the world, with highways and sacred sightlines radiating out to four quarters: Chinchaysuyu to the north, Antisuyu to the east, Collasuyu to the south, and Cuntisuyu to the west. World History Encyclopedia describes the resulting territory as stretching 5,500 kilometers from what is now Ecuador and southern Colombia down through Peru, Bolivia, northern Chile, and upland Argentina, governed by roughly 40,000 ethnic Inca administrators ruling some 10 million subjects who spoke more than 30 different languages. Government ran through nested layers: local ayllu kin groups reporting to regional nobles called kurakas, who reported to over 80 regional administrators, who reported to four quarter-governors, who answered to the Sapa Inca in Cuzco. Quechua speakers held privileged legal status across the empire regardless of their own ethnic origin.
Reputable source · 2 sources - 1493-1514The Age of Exploration
The Taino Meet Columbus, and Their Population Collapses
When Columbus arrived, the Taino were the most numerous Indigenous people of the Caribbean, living across what are now Cuba, Jamaica, Hispaniola (Haiti and the Dominican Republic), Puerto Rico, and the Virgin Islands, with complex political and religious systems and skill at farming, navigation, and building oceangoing canoes that could carry more than 100 paddlers. Some scholars estimate the Taino population on Hispaniola alone reached more than three million by the late 1400s, though the number is disputed. Spanish colonization brought forced labor under the encomienda system, disruption of Taino food production, and diseases the Taino had no immunity to, especially smallpox. By 1519, roughly a third of the Indigenous population on Hispaniola had already died of smallpox according to Spanish records; a widely cited, though contested, extrapolation from Spanish census records puts the total Taino population decline at around 85 percent by the early 1500s.
Primary source · 2 sources - c. 1493-1527The Inca Empire
Huayna Capac Rules an Empire at Its Territorial Peak
Huayna Capac, also written Wayna Qhapaq, became the eleventh Sapa Inca around 1493, succeeding Topa Inca Yupanqui. Under his rule the empire reached its greatest territorial extent, with campaigns extending Inca control north through modern Ecuador and into southern Colombia, an expansion significant enough that Huayna Capac established a second Inca capital at Quito to administer the northern territories more directly. He spent much of his reign campaigning in the north rather than in Cuzco, reflecting how much of the empire's remaining growth after Topa Inca Yupanqui's conquests was concentrated in that direction.
Reputable source · 2 sources - c. 1493, at maximum extentThe Inca Empire
The Qhapaq Nan Links the Empire with 40,000 Kilometers of Road
The Inca road network, called the Qhapaq Nan or royal highway, eventually covered more than 40,000 kilometers by World History Encyclopedia's account, or 30,000 kilometers of designated heritage route by UNESCO's more conservative count of surviving, mapped sections, running along two main north-south corridors, one down the coast and one through the highlands, tied together by roughly 20 secondary routes and many smaller trails. Some of it reused older roads built by earlier Andean cultures such as the Wari and Tiwanaku, but Inca engineers also cut fresh routes across deserts, ravines, and mountain passes above 5,000 meters, using no more than wood, stone, and bronze tools, with milestones marking each seven-kilometer unit of distance called a topo. Rope suspension bridges, some over 40 meters long, crossed the deepest gorges; the road had no use for wheeled vehicles since the Inca had none, so all traffic moved on foot or by llama caravan.
Reputable source · 2 sources - c. 1493, mature agricultural systemThe Inca Empire
Terracing and Freeze-Dried Chuno Turn the Andes into Farmland
To farm the steep, high-altitude Andes, the Inca built extensive stone terracing on hillsides, paired with canals and irrigation networks that let them drain wetlands and redirect water across long distances. Fields were worked with simple tools, including the chakitaqlla, a wooden or bronze foot plough, and teams of about seven or eight farmers worked together, men breaking ground and women following to sow seed. Potatoes, one of the staple crops alongside maize and quinoa, could be preserved through a freeze-drying process producing chuno. World History Encyclopedia describes potatoes being dried or freeze-dried this way, extending their usable life to roughly four years in storage, far longer than fresh potatoes would last. A parallel technique produced ch'arki, freeze-dried meat, a popular food for travelers. Crop rotation and fertilizer from dried llama dung, guano, or fish heads helped manage soil fertility across this terraced terrain.
Reputable source · 2 sources - c. 1493, mature imperial ideologyThe Inca Empire
The Sapa Inca Rules as a Living God
The Sapa Inca, the empire's absolute ruler, was regarded as Inti the sun god's living representative on earth, a status that justified Inca claims to rule over conquered peoples in the first place. World History Encyclopedia describes a ruler who drank from gold and silver cups, wore silver shoes, and lived in a palace furnished with the finest textiles available in the empire. Royal treatment did not end at death: Inca rulers were mummified, and their preserved bodies, called mallquis, were kept in the Coricancha temple and periodically brought out in ceremonies, dressed in fine regalia, offered food and drink, and consulted on state affairs as though still living. Atahualpa, the last ruler before the conquest, is separately described drinking from gold cups, wearing silver-soled sandals, traveling on a gold-and-silver litter trimmed with parrot feathers, and having anything he touched ritually burned each year to guard against witchcraft.
Reputable source · 2 sources - c. 1493, mature imperial useThe Inca Empire
The Quipu Records an Empire That Had No Writing
Lacking an alphabetic writing system, the Inca recorded numerical information using the quipu, an assembly of knotted, colored cords, sometimes as many as 1,500 strings, hung from a primary cord or bar. World History Encyclopedia describes the system as a decimal positional code identical in structure to the base-10 system in use today, capable of representing numbers up to 10,000: a knot's turns indicated digits one through nine, a figure-eight knot marked a fixed value, a simple overhand 'granny' knot equaled ten, and a missing knot on a string signified zero. Specialists called khipu kamayuq, whose role was hereditary, memorized the oral explanation that accompanied each quipu, since the knots alone recorded quantities, not full narrative content, though some scholars now argue quipu were moving toward encoding narrative information as well when the empire collapsed. Quipu recorded census data, tribute owed, storehouse inventories, livestock counts, army rosters, and astronomical and calendar information, and chasqui runners carried them alongside their spoken messages.
Reputable source · 2 sources - c. 1493, mature imperial systemThe Inca Empire
The Mit'a Labor Tax Fills Thousands of State Storehouses
The Inca economy ran without money. Instead, conquered communities paid tax in kind, foodstuffs, precious metals, textiles, feathers, dyes, and spondylus shell, and in labor, known as mit'a service, which could send workers anywhere in the empire they were needed: building roads, working state farms, or constructing monuments like Sacsayhuaman. Agricultural land and herds were divided into three parts, one for the state religion, one for the Inca ruler, and one for the farming community itself, and families performing mit'a duty kept their own plots largely untouched while they worked the state's land. The resulting surplus filled qollqa, single-room stone storehouses built by the tens of thousands across the empire, arranged in neat rows near population centers and roadside stations, with ventilation and drainage designed to keep contents dry: ordinary goods could be kept for up to two years and freeze-dried foods for up to four.
Reputable source · 2 sources - 7 June 1494The Age of Exploration
The Treaty of Tordesillas Divides the World
Spain and Portugal signed the Treaty of Tordesillas to settle competing claims after Columbus's voyage, drawing a north-south line 370 leagues west of the Cape Verde islands. Lands to the west of the line went to Spain; lands to the east went to Portugal. King Ferdinand and Queen Isabella of Castile agreed the treaty with King John II of Portugal; Spain ratified it on 2 July 1494 and Portugal on 5 September 1494, with papal confirmation following in 1506. Neither crown consulted the people already living in the Americas, Africa, or Asia whose land the line ran through.
Primary source · 2 sources - 7 June 1494The Spanish Empire
Spain and Portugal Divide the World at Tordesillas
Following Columbus's return, Spain and Portugal negotiated a treaty to settle competing claims over newly found Atlantic lands. Signed at the village of Tordesillas on 7 June 1494 and ratified by Spain on 2 July and by Portugal on 5 September of that year, the treaty drew a north-south line 370 leagues west of the Cape Verde Islands. Lands to the east of the line would belong to Portugal, and lands to the west would belong to Spain. The treaty's own text, negotiated in the presence of named representatives of both crowns, records Ferdinand and Isabella's full royal titles across Castile, Leon, Aragon, Sicily, Granada, and their other territories, underscoring how much authority stood behind the agreement.
Primary source · 2 sources - c. 24 June 1497The Age of Exploration
John Cabot Reaches Newfoundland for England
The Italian navigator Giovanni Caboto, known in England as John Cabot, sailed from Bristol on 20 May 1497 in a single three-masted caravel called the Mathew, about 24 meters long. King Henry VII of England had sponsored the voyage in hope of finding a sea route to Asia. After five weeks crossing the Atlantic, Cabot most likely reached Cape Breton Island, Nova Scotia, around 24 June, and explored the coast for about a month before favorable winds carried him back to Bristol by 6 August. Like Columbus, he believed he had reached the edge of Asia, calling the land Newe Founde Launde.
Reputable source · 2 sources - May 1498The Age of Exploration
Vasco da Gama Reaches India by Sea
Vasco da Gama led a Portuguese fleet around the Cape of Good Hope and up the East African coast before crossing the Indian Ocean to reach Kappad, near the city of Calicut, on India's southwest coast in 1498. Da Gama met with Calicut's ruler, but the gifts he brought failed to impress the king, and the two sides spent months trading and studying each other's customs without forming the alliance da Gama wanted. His men clashed repeatedly with Arab and Muslim traders already established in the Indian Ocean trade, at one point bombarding Calicut's port and killing several Muslim traders after seizing hostages and forcing them to swear loyalty to the Portuguese king.
Reputable source · 2 sources - 22 April 1500History of Brazil
Cabral Lands on the Brazilian Coast
Pedro Alvares Cabral left Lisbon in March 1500 leading a fleet bound for India along Vasco da Gama's route. Sailing far southwest into the Atlantic to catch favorable winds, he reached an unknown coastline instead, anchored, and claimed the land for Portugal before continuing to India. World History Encyclopedia notes he 'sailed too far west and accidentally discovered Brazil' with 1,200 Portuguese aboard after badly missing his intended destination near southern Africa. The land fell on Portugal's side of the line drawn by the 1494 Treaty of Tordesillas, which is why Brazil would speak Portuguese rather than Spanish.
Reputable source · 2 sources - 22 April 1500The Age of Exploration
Cabral Lands in Brazil
Pedro Alvares Cabral left Lisbon on 9 March 1500 commanding 13 ships and about 1,200 men, including the veteran navigator Bartolomeu Dias, bound for India along da Gama's route. Sailing far southwest into the Atlantic to catch favorable winds around Africa, Cabral's fleet reached an unfamiliar coastline instead. Realizing this was not India, the fleet anchored at Porto Seguro on the coast of what is now the Brazilian state of Bahia. Cabral's men went ashore and erected a large wooden cross to claim the land for Portugal, and Cabral sent a ship back to Portugal to report the discovery before continuing on to India himself.
Reputable source · 2 sources - 16th centuryThe Age of Exploration
The Columbian Exchange Remakes Diets, Farms, and Populations on Both Sides of the Atlantic
Following Columbus's voyages, plants, animals, people, and diseases began moving between the Americas and the rest of the world in what historian Alfred Crosby, who coined the term in his 1972 book, called the Columbian Exchange. American crops including maize and the potato spread to Europe, Africa, and Asia, eventually becoming staple foods that reshaped diets and supported population growth on those continents. Europeans introduced wheat, sugar, and livestock such as horses, cattle, and pigs to the Americas, transforming agriculture and warfare there. The most consequential and one-sided transfer was disease: Old World illnesses including smallpox, measles, and influenza, to which Indigenous Americans had no prior immunity, killed enormous numbers of people, while syphilis is generally believed to have traveled the opposite direction, from the Americas to Europe.
Reputable source · 2 sources - c. 1500sThe Atlantic Slave Trade
Sao Tome Becomes the First Tropical Sugar-and-Slavery Colony
Following earlier sugar experiments on Madeira, Portuguese settlers established sugar plantations on the island of Sao Tome in the Gulf of Guinea using enslaved labor imported mainly from the Kingdom of Kongo and Ndongo, in present-day Angola. By the 1530s Sao Tome had become the largest sugar producer supplying European markets, run entirely on a workforce of enslaved Africans rather than the mixed free and enslaved labor used on Madeira. It was the first place where Europeans combined large-scale monocrop plantation agriculture with a labor force composed exclusively of enslaved Africans, a combination that had not existed at this scale before.
Reputable source · 2 sources - 1502 CEThe Aztec Empire
Moctezuma II Inherits an Empire at Its Territorial Peak
Moctezuma II succeeded his uncle Ahuitzotl as huey tlatoani in 1502, inheriting an empire at what World History Encyclopedia's chronology records as its greatest territorial extent, extracting tribute from 371 city-states across 38 provinces covering roughly 200,000 square kilometers. Unlike Ahuitzotl's aggressive expansion, Moctezuma II's reign focused on consolidating and administering the territory his predecessors had conquered rather than adding significantly to it, while also working to centralize religious and political authority more tightly around Tenochtitlan and his own person. He continued to fight Flower Wars against Tlaxcala and neighboring holdouts, keeping long-standing tensions with those unconquered city-states alive right up to the point when Hernan Cortes would arrive looking for allies willing to fight against Tenochtitlan.
Reputable source · 2 sources - c. 1503The Spanish Empire
The Encomienda System Puts Millions of Indigenous People Into Forced Labor
Under the encomienda system, the Spanish crown granted settlers and conquistadors the legal right to extract forced labor from Indigenous chiefs and their communities across the Americas. In exchange, encomenderos were supposed to provide military protection and fund a parish priest so laborers could be converted to Christianity. In practice the system functioned as a form of slavery: laborers worked mines, fields, and construction projects under threat of violence, with death rates from overwork, malnutrition, and disease running extremely high. The Dominican friar and former conquistador Bartolome de las Casas, who had personally taken part in the conquest of Cuba in 1511, turned against the system and in 1522 wrote a graphic account of its abuses titled A Very Brief Recital of the Destruction of the Indies.
Reputable source · 2 sources - Early 1500sHistory of Brazil
Brazilwood Gives the Colony Its Name
The first thing Portugal wanted from its new land was a tree. Brazilwood, prized in Europe for its wood and a red dye it produced, grew in abundance along the Atlantic coast. When the Portuguese saw the blood-red inside of these trees, they called them pau-brasil, pau being Portuguese for 'wood' and brasil a derivative of brasa, or ember. The name Brazil first appears on maps around 1511. Harvesting the wood required Indigenous labor, and the Tupi people, initially traded with for that labor, were increasingly coerced or enslaved as demand grew. From 1504 onward, French vessels from Brittany, Flanders, and Normandy competed in the dyewood trade despite Portugal's claimed monopoly.
Reputable source · 2 sources A Map Gives the New World the Name America
The Italian navigator Amerigo Vespucci sailed on Spanish and Portuguese expeditions along the South American coast in the years after Columbus's voyages, and argued in his own accounts that the land was not part of Asia, as Columbus believed, but a previously unknown continent, which Vespucci called Mundus Novus, the New World. In 1507, German cartographer Martin Waldseemuller published a geography book with a world map that labeled the southern landmass "America" in Vespucci's honor. Vespucci himself kept using the term Mundus Novus, but Waldseemuller's name stuck.
Reputable source · 2 sources- early April 1513The Age of Exploration
Ponce de Leon Names Florida
Juan Ponce de Leon, Puerto Rico's first Spanish governor, led an expedition of three ships, the Santiago, the Santa Maria de la Consolacion, and the San Cristobal, that made landfall near present-day St. Augustine in early April 1513. The coast, thick with vegetation, led him to name it La Florida, both for the lush flowers and because the landing fell about a week after Pasqua Florida, the Spanish term for the Easter season, or feast of flowers. He continued exploring south along Florida's coast before returning to Puerto Rico, and never succeeded in founding a colony there before his death.
Reputable source · 2 sources - c. 25-29 September 1513The Age of Exploration
Balboa Crosses Panama and Sights the Pacific
Vasco Nunez de Balboa, a Spanish colonist based at the settlement of Darien in Panama, led about 100 to 190 Spaniards, including a young Francisco Pizarro, and hundreds of native porters across the Isthmus of Panama in search of a sea local people had described. After nearly a month of travel, Balboa reached the coast and became the first European known to see the ocean from the American side. He named it the Mar del Sur, the South Sea, and, on 29 September, waded into the water to claim it and its shores for Spain, then returned to Darien by January 1514. Ferdinand Magellan later renamed the same ocean the Pacific after crossing it in 1520. Balboa did not enjoy his discovery for long: a political rival, Pedro Arias de Avila, had him arrested on a trumped-up treason charge and executed in 1519.
Reputable source · 2 sources - August 18, 1518The Atlantic Slave Trade
Charles V Opens the Direct Trade From Africa With the First Asiento
Before 1518, Spain's American colonies received enslaved Africans only indirectly, after they had first been brought to Spain or Portugal and baptized as Christians. On August 18, 1518, Holy Roman Emperor Charles V issued a charter, an asiento, to his courtier Lorenzo de Gorrevod granting him permission to ship 4,000 enslaved Africans directly from West Africa to Spain's American colonies, ending the requirement that captives first touch Iberian soil. Gorrevod, who had no shipping operation of his own, immediately sold the license to Genoese merchant financiers for a substantial profit. The asiento system this charter created, in which the Spanish crown sold monopoly licenses to supply enslaved Africans to its colonies rather than trading directly, would structure Spanish colonial slaving for the next two centuries.
Primary source · 2 sources - 28 June 1519The Spanish Empire
Charles V Inherits a Habsburg Empire on Four Fronts
Charles, grandson of Ferdinand and Isabella through his mother Joanna and grandson of Holy Roman Emperor Maximilian I through his father Philip, inherited Spain and its American territories in 1516 and was elected Holy Roman Emperor on 28 June 1519, adding Austria, the Netherlands, and a claim to authority across the German-speaking lands. This combination made Charles ruler of the largest European power bloc since Charlemagne, stretching from Spanish America to Central Europe. He convened the 1521 Diet of Worms hoping to unify his subjects religiously, where the German reformer Martin Luther refused to recant his challenge to Catholic doctrine. When Charles's later attempt to impose religious unity at the 1530 Diet of Augsburg failed, he tried to force the issue militarily in the 1546-1547 Schmalkaldic War against the Protestant Schmalkaldic League. Charles won that war but could not suppress the Protestant movement it had been fought to destroy.
Reputable source · 2 sources - 1519-1521 CEThe Aztec Empire
La Malinche Becomes Cortes's Voice and a Contested Symbol
Born near modern Veracruz to a noble father and a lower-ranking mother, Malintzin was sold into slavery as a child, passed through Xicallanco and then Potonchan, where she lived among the Chontal Maya before being given to the Spanish in 1519. World History Encyclopedia's biographical account, drawing on historian Camilla Townsend's research, describes how she was rechristened Marina by her Spanish captors, who did not ask what she had been called before. Because she spoke both Nahuatl and Chontal Maya, and quickly learned Spanish, she became the essential link in a communication chain that let Cortes negotiate, threaten, and gather intelligence from Nahuatl-speaking polities throughout central Mexico, including eventually direct exchanges with Moctezuma II. She has since become one of the most contested figures in Mexican historical memory, at once cast as a traitor for aiding the conquest and reclaimed by other scholars and writers as a symbol of resilience and survival within an impossible position as an enslaved woman with no real choice in the matter.
Reputable source · 2 sources Cortes Lands in Mexico and Moves on the Aztec Empire
In 1519, drawn by rumors of gold and sophisticated inland cities, Hernan Cortes led an expedition of eleven ships and about 500 men to Mexico. The Aztec Empire, ruled by the Mexica people, dominated much of Mesoamerica from its capital Tenochtitlan, a city built on an island in a lake that, according to Spanish accounts, dazzled the conquistadors as unlike anything they had seen in Europe. Cortes marched inland, gathering thousands of native allies from peoples who resented Aztec rule, and formed a relationship with an enslaved Nahua woman named La Malinche, who worked as his translator and adviser.
Primary source · 2 sources- 1519 CEThe Aztec Empire
Hernan Cortes Lands in Mexico and Gains an Interpreter
In 1518 the governor of Cuba, Diego Velazquez de Cuellar, dispatched Hernan Cortes with 11 ships and around 500 men to explore the Mexican coast, and the expedition landed in March 1519. Among the early captures was a Nahuatl and Chontal Maya-speaking woman the Spanish called Marina, later known as La Malinche or Malintzin, who had been enslaved and traded among Maya communities before being given to the Spanish along with 19 other women following a battle. World History Encyclopedia's account of the campaign notes that with Malintzin working alongside another Spaniard fluent in Mayan, Cortes could finally communicate reliably with the peoples of central Mexico, a capability that proved decisive as he marched inland in August 1519, first fighting and then allying with the Tlaxcalans, longtime enemies of the Triple Alliance, before continuing on toward Tenochtitlan.
Reputable source · 2 sources - November 8, 1519The Aztec Empire
Cortes and Moctezuma II Meet in Tenochtitlan
Cortes and his men were permitted to enter Tenochtitlan peacefully on November 8, 1519, and World History Encyclopedia describes them marveling at the temples, canals, and markets of a city larger than anything they had seen in Europe. Moctezuma II and Cortes met and exchanged gifts, with the Aztec ruler apparently wary of the newcomers, having heard reports of their earlier military victories against other peoples, but undecided about how to handle them. That uncertainty ended six days later: on November 14, Cortes took Moctezuma hostage inside his own capital, forcing him to swear loyalty to the Spanish king Charles V and enduring the added humiliation of a Christian crucifix being erected atop the Templo Mayor itself.
Reputable source · 2 sources - 20 September 1519The Age of Exploration
Magellan's Fleet Departs to Find a Western Route to the Spice Islands
Ferdinand Magellan, a Portuguese navigator sailing under the Spanish crown, set out with five ships to find a westward sea route to the Spice Islands (the Moluccas) that would avoid Portuguese-controlled waters around Africa and India. His fleet worked down the coast of South America, discovering the strait that now bears his name at the continent's southern tip, and became the first European expedition to cross the Pacific Ocean. Much of what is known about the voyage comes from Antonio Pigafetta, a crew member who kept a firsthand written account of the journey's hardships, including storms, scurvy, and a near-mutiny.
Primary source · 2 sources - June 30, 1520The Aztec Empire
The Noche Triste: Cortes Flees Tenochtitlan
With Moctezuma dead and the population in open revolt, Cortes decided to abandon Tenochtitlan rather than face annihilation inside it, attempting to slip his forces out along the western causeway under cover of darkness on the night of June 30, 1520. World History Encyclopedia's account describes the Spaniards using temporary wooden bridges to cross the city's many canal gaps during their retreat, but the Aztecs discovered the escape and attacked, and the fighting that followed became known as the Noche Triste, the Sad Night. Many Spanish soldiers, weighed down by looted gold, drowned in Lake Texcoco when overloaded boats and makeshift crossings failed under them. Cortes emerged from the retreat having lost roughly half his men, most of his horses, and the eight tons of treasure his expedition had accumulated since landing in Mexico.
Reputable source · 2 sources - September-December 1520The Aztec Empire
Smallpox Sweeps Through Tenochtitlan
Smallpox broke out in Tenochtitlan in the months after the Noche Triste, most likely carried by a member of the rival Spanish force Cortes had defeated at Veracruz. Dumbarton Oaks Research Library's exhibit on the epidemic quotes the Florentine Codex's account from a survivor: sores erupted across the body, victims became too weak to move or even lie face down without unbearable pain, and many who did not die directly from the disease starved to death because everyone around them was too sick to provide care. In a population that had never previously encountered the virus, mortality among the infected could run as high as 100 percent depending on the strain, and Dumbarton Oaks cites estimates of five to eight million deaths across Mesoamerica during this single outbreak. The Aztec ruler Cuitlahuac, who had taken power after Moctezuma's death only weeks earlier, was among those who died of the disease, reigning for a reported 80 days before smallpox killed him too.
Reputable source · 2 sources - May-June 1520The Aztec Empire
The Toxcatl Massacre and the Death of Moctezuma II
While Cortes left Tenochtitlan in May 1520 to confront a rival Spanish force sent by the governor of Cuba to arrest him, he left the city under the command of Pedro de Alvarado, whose men attacked Aztec nobles during a religious ceremony, provoking an uprising World History Encyclopedia describes the Aztecs rising up and killing a number of the Spanish left behind. Cortes returned on June 24 after defeating the rival Spanish force and persuading its survivors to join him, but found the city in open revolt, with the remaining Spanish trapped inside the palace of Axayacatl under bombardment from the Templo Mayor above them. When the Spanish tried to use the captive Moctezuma to calm the population, he was struck by a stone thrown from the crowd and died on June 30, 1520, having already lost most of the authority that made him useful as a hostage.
Reputable source · 2 sources - 27 April 1521The Age of Exploration
Magellan Is Killed at Mactan
After crossing the Pacific, Magellan's fleet reached the Philippines, where Magellan worked to convert local rulers to Christianity. Chief Datu Lapu-Lapu of Mactan Island refused conversion, and Magellan led about 60 men to attack Mactan despite facing a much larger force of roughly 1,500 defenders. Magellan was killed in the fighting on 27 April 1521. The surviving ships, the Trinidad and the Victoria, pressed on to the Spice Islands without him.
Reputable source · 2 sources - April-August 1521The Aztec Empire
Cortes Besieges Tenochtitlan
Cortes began his siege of Tenochtitlan in April 1521 with a force World History Encyclopedia records as 700 infantry, 118 crossbowmen and gunners, 86 horses, and 18 field guns, but the decisive numerical advantage came from at least 100,000 Tlaxcalan allies fighting alongside the Spanish against their old Aztec enemies. On April 28, Cortes launched 13 specially built brigantines onto Lake Texcoco, prefabricated ships that could contest the Aztecs' vast fleet of war canoes in a way nothing before had. On May 26, Pedro de Alvarado's forces destroyed the Chapultepec aqueduct, cutting off Tenochtitlan's supply of fresh water and forcing the city to rely on brackish lake water. Through May and June, three Spanish columns pushed into the city from the west, south, and east while the brigantines blocked the causeways, and Cortes's own force was nearly captured during a failed assault on June 30, saved only by the Aztec preference for taking live captives rather than killing enemies outright in the field.
Reputable source · 2 sources - August 13, 1521The Aztec Empire
Cuauhtemoc Surrenders and Tenochtitlan Falls
By August 1521, Tenochtitlan's defenders under Cuauhtemoc, who had become ruler after Cuitlahuac's death from smallpox, had been pushed back to the city's central core after months of fighting, their food and water supplies exhausted and the surrounding causeways blocked by Spanish brigantines. On August 13, after 93 days of siege, Cuauhtemoc attempted to escape across the lake by canoe with loyal nobles and advisors but was discovered and captured. World History Encyclopedia records this date as the moment the Aztec capital fell into Spanish hands, ending the independent existence of the empire the Triple Alliance had built over the preceding century. The Spanish and their Tlaxcalan allies then began construction of a new colonial capital, Mexico City, directly on top of Tenochtitlan's ruins, reusing stone from the demolished Templo Mayor in the foundations of the new city's cathedral and other buildings.
Reputable source · 2 sources - 13 August 1521The Spanish Empire
Cortes Brings Down the Aztec Empire
In 1519, drawn by rumors of gold and sophisticated inland cities, Hernan Cortes led an expedition of eleven ships and about 500 men to Mexico. He marched inland toward Tenochtitlan, the Aztec capital built on an island in a lake, gathering thousands of native allies from peoples who resented Aztec rule and forming a partnership with an enslaved Nahua woman, La Malinche, who served as his translator and adviser. A smallpox epidemic, likely carried by a member of a Spanish resupply expedition, swept through the Valley of Mexico while Tenochtitlan was already under siege, killing the emperor Cuitlahuac and an estimated third to half of the population in the worst-hit areas. Tenochtitlan fell to Spanish and allied forces on 13 August 1521. Pre-contact population estimates for the Valley of Mexico range from 15 to 20 million; within a century the same region held perhaps two to three million people, though historians treat the exact figures as approximate given gaps in surviving Spanish records.
Primary source · 2 sources - 13 August 1521The Age of Exploration
Smallpox and War Destroy Tenochtitlan
During the war between Cortes's forces and the Aztec Empire, a smallpox epidemic swept through the Valley of Mexico, likely carried by a member of a Spanish resupply expedition, and spread through a population with no prior exposure to the disease. The epidemic hit while Tenochtitlan was already under siege and killed the emperor Cuitlahuac along with an estimated third to half of the population in the hardest-hit areas. Tenochtitlan fell to Spanish and allied forces on 13 August 1521, two years after Cortes's arrival. Estimates of the pre-contact population of the Valley of Mexico run from 15 to 20 million; within a century the same region held perhaps two to three million people, according to most historians' estimates, though exact figures remain disputed given the limits of the surviving records.
Primary source · 2 sources - c. 1524-1528The Inca Empire
Smallpox Arrives Ahead of the Spanish and Kills Huayna Capac
An epidemic of Old World disease, generally identified in the sources as smallpox, spread down through the Americas ahead of the Spanish themselves, likely carried by indigenous trade and travel networks from the Caribbean and Central America, where the Spanish had already been present for years. World History Encyclopedia states the disease killed Huayna Capac in 1528 along with his intended heir, Ninan Cuyuchi, who had also been being groomed for the throne, and that in some regions the epidemic killed 65 to 90 percent of the population. Because Huayna Capac died without a settled second heir, since his first choice had also died of the same disease, the succession passed into open dispute between two surviving sons, Huascar and Atahualpa.
Reputable source · 2 sources - 1526-1532 (sources differ)The Age of Exploration
The Transatlantic Slave Trade Begins
Portugal had already been trading enslaved Africans within Africa and to Europe and its Atlantic island colonies since the 1440s, decades before Columbus's voyages. Spanish colonizers first tried enslaving Native Americans in the Caribbean, including the Taino, but found the practice less sustainable as Indigenous populations collapsed under forced labor and disease. Attention turned to Africa instead. Sources differ on the exact date of the first large-scale shipment of enslaved Africans directly to Portugal's Brazilian colonies: the World History Encyclopedia dates it to 1526, while an EBSCO account places the start of Portuguese importation of African slaves into Brazil in 1532. Either way, Portuguese and Spanish ports, especially Lisbon, Seville, and Cadiz, handled the overwhelming majority of European slaving voyages in this early period, and within decades Brazil became a major destination for ships carrying enslaved people. Death rates aboard the ships that crossed the Atlantic, known as the Middle Passage, were high throughout the trade's three-century history.
Reputable source · 2 sources - 6 May 1527The Spanish Empire
Charles V's Own Unpaid Troops Sack Rome
Pope Clement VII allied with France against Charles V despite having already been defeated once by Spanish forces at Pavia in 1525, and to save money he had dismissed most of Rome's troops. In 1527, Charles V lacked funds to pay his Spanish troops and German mercenaries in Italy; defying their commanders, the unpaid army marched south intending to sack Florence and Rome, robbing and killing as it advanced. On 6 May 1527, under cover of fog, the army broke through Rome's defenses. Two thousand Swiss guards died protecting Clement, who escaped to the Castel Sant'Angelo while Charles's mercenaries looted, tortured, and killed for months, burning roughly two-thirds of the city and holding cardinals and nobles for ransom. They were barely dissuaded from torching the Vatican Library or destroying the Sistine Chapel. The invaders only left when disease began killing them.
Reputable source · 2 sources - c. 1527-1532The Inca Empire
Huascar and Atahualpa Fight a Six-Year Civil War
With Huayna Capac dead and no settled heir, his sons Huascar, based in Cuzco, and Atahualpa, based in the northern capital Quito, fought for control of the empire. World History Encyclopedia describes six years of increasingly damaging warfare between the two half-brothers' factions, fought by Inca nobility on both sides, until Atahualpa finally prevailed shortly before the Spanish arrived. Atahualpa captured Huascar, imprisoned him, and had his immediate kin-group killed along with many of his supporters. Atahualpa also had historians executed and Inca quipu records destroyed, an act the chroniclers describe him framing as a pachakuti, a deliberate world-renewing purge, the same term the dynasty's founder Pachacuti had taken as his own title generations earlier.
Reputable source · 2 sources - November 1532 - mid 1533The Inca Empire
Atahualpa Offers a Room Filled Twice Over with Gold and Silver
Held captive after Cajamarca, Atahualpa offered his freedom's price: a room measuring roughly 6.2 by 4.8 meters filled with treasure up to a height of 2.5 meters, first with gold objects, from jewelry to religious idols, and then filled twice more with silver. World History Encyclopedia states the full collection took eight months to assemble and deliver, and that the accumulated treasure would have been worth well over 300 million dollars in modern terms. While the ransom was being gathered Atahualpa continued to direct Inca affairs from captivity, and Pizarro sent expeditions to scout Cuzco and Pachacamac while awaiting reinforcements from Panama, using shipments of gold to signal the wealth still on offer to attract them.
Reputable source · 2 sources - November 1532The Age of Exploration
Pizarro Captures Atahualpa and Ends the Inca Empire
Francisco Pizarro arrived in northern Peru in late 1531 with a small force of about 180 men and 30 horses. He took advantage of a civil war within the Inca Empire, then in November 1531 requested a meeting with the Inca ruler Atahualpa, who agreed to meet at Cajamarca. The Spanish tried to convert Atahualpa to Christianity; he refused, and Pizarro's men captured him in the ensuing confrontation. Atahualpa offered a room filled with gold and silver as ransom for his freedom, and the Inca delivered the treasure, but Pizarro had him executed in 1533 regardless. Spain went on to suppress several Inca rebellions over the following decades, achieving full control of the former empire by 1572.
Primary source · 2 sources - 16 November 1532The Inca Empire
Pizarro Meets Atahualpa at Cajamarca
Francisco Pizarro, an aging Spanish adventurer on his third expedition down the Pacific coast, arrived at the highland town of Cajamarca with a force of 168 men, including 62 cavalry, after a slow advance up from the coast in which his troops had already noted the well-built roads and storehouses of a clearly wealthy civilization. On Friday 15 November 1532 Pizarro sent word requesting a meeting with Atahualpa, who was resting at nearby hot springs after his recent victory over Huascar; confident in his 80,000-strong army, Atahualpa made the Spanish wait until the next day. On 16 November the two sides met formally in the town square with brief speeches and a shared drink while Atahualpa's retinue watched Spanish horsemanship. Both sides left intending to strike first. The next morning Pizarro used the maze-like layout of Cajamarca's buildings to position his men in ambush; when Atahualpa's procession entered the square, Spanish cannon fired, followed by a mounted charge. In the resulting battle, matching firearms, cannon, and steel armor against spears, slings, and clubs, about 7,000 Inca were killed against no recorded Spanish losses, and Atahualpa was struck on the head and taken alive.
Primary source · 2 sources - 26 July 1533The Inca Empire
Pizarro Executes Atahualpa After Collecting the Ransom
Once the ransom had been fully collected, Pizarro tried and executed Atahualpa anyway on 26 July 1533. World History Encyclopedia states he was originally sentenced to death by burning at the stake, a sentence commuted to death by strangulation after Atahualpa agreed to be baptized as a Christian. Some of Pizarro's own men considered the execution dishonorable given the ransom had been paid in good faith, and the Spanish crown itself later criticized Pizarro for the treatment of a foreign sovereign, but Pizarro had concluded that only the Sapa Inca's death could break Inca resistance, since Atahualpa's captivity had already shown him how completely Inca subjects still deferred to their king even as a prisoner. Atahualpa's severed head gave rise to the Inkarri legend, the belief that the head would eventually regrow a body and the Inca ruler would return to restore the old order.
Reputable source · 2 sources Pizarro Captures Atahualpa and Ends the Inca Empire
Francisco Pizarro arrived in present-day northern Peru late in 1531 with a small force of about 180 men and 30 horses. He took advantage of an ongoing Inca civil war, then requested a meeting with the Inca ruler Atahualpa, who agreed to meet at Cajamarca in November 1531. Spanish forces tried to convert Atahualpa to Christianity; he refused, and in the confrontation that followed the Spanish captured him. Atahualpa offered to fill a room with gold and silver as ransom, and the Inca delivered the treasure, but Pizarro had him executed anyway in 1533. Spain went on to suppress several Inca rebellions over the following decades, achieving full control of the former empire by 1572.
Primary source · 2 sources- 15 November 1533The Inca Empire
Cuzco Falls to the Spanish
Following Atahualpa's execution, Pizarro's forces moved on the Inca capital, encountering resistance from troops still loyal to Atahualpa near Hatun Xauxa and a retreating Inca army at Vilcaswaman, along with at least one surprise attack that inflicted a real Spanish defeat en route. The Spanish were aided throughout by local populations willing to help against Inca rule and by the ability to resupply from captured Inca storehouses. Cuzco itself, according to World History Encyclopedia, fell into Pizarro's hands on 15 November 1533 after only brief resistance, and the golden treasures of the city and of the Coricancha temple were stripped from the walls and melted down. Pizarro's first attempt to install a puppet ruler, Tupac Huallpa, a younger brother of Huascar, failed when the man died of illness soon after; Pizarro then installed another son of Huayna Capac, Manco Inca, as a second puppet Sapa Inca.
Reputable source · 2 sources - 1530sHistory of Brazil
The Crown Divides Brazil Into Captaincies
To settle a coast it could not afford to garrison directly, the Portuguese Crown carved Brazil into feudal grants called captaincies. World History Encyclopedia records 15 such grants, obliging the nobles who received them, or more accurately their vassals, to develop the land for agriculture. Under the system, as the Library of Congress country study puts it, each donee was responsible for colonizing his own captaincy at his own expense. Most captaincies failed. The Crown then shifted toward direct royal administration, sending Tome de Sousa to found a capital city, Salvador, on the Bay of All Saints (Baia de Todos os Santos) in 1549.
Reputable source · 2 sources - 24 July 1534The Age of Exploration
Jacques Cartier Enters the St. Lawrence and Claims Canada for France
Commissioned by King Francis I of France to search for gold, a route to Asia, and new territory, Jacques Cartier left France on 20 April 1534 with two ships and 61 men. He explored the Gulf of St. Lawrence, meeting more than 300 people from Stadacona, near present-day Quebec City, who had come to Gaspe Bay to fish. At Gaspe, Cartier's men erected a large cross claiming the land for France. Two sons of the Stadacona chief Donnacona were taken aboard Cartier's ship and brought back to France with him, accompanying him on the remainder of the voyage. Weather and difficult currents kept him from finding the entrance to the St. Lawrence River itself on this trip.
General source · 2 sources - 1536-1537The Inca Empire
Manco Inca Turns on the Spanish and Besieges Cuzco
Installed by Pizarro as a puppet Sapa Inca to keep the state functioning, Manco Inca instead organized his own rebellion, raising large armies that besieged both Cuzco and the new Spanish capital at Lima. World History Encyclopedia describes the sieges as prolonged, with the Spanish holding out until the besieging Inca forces, composed largely of farmers who could not afford to abandon their own harvests indefinitely, were forced to withdraw; a second siege the following year again failed once the Spanish killed the Inca army's commanders in a targeted attack, after which organized resistance around Cuzco collapsed.
Reputable source · 2 sources - c. 1537The Inca Empire
Manco Inca Retreats to Vilcabamba and Founds a Rump State
Forced from Cuzco after his failed sieges, Manco Inca withdrew south into the remote, forested Vilcabamba region beyond the Spanish-controlled highlands, where he established an independent Inca state that World History Encyclopedia describes as resisting Spanish control for another four decades through Manco Inca and his successors. Machu Picchu, once mistakenly believed to be this last refuge after its 1911 rediscovery, was in fact a separate, older site: the true final capital was located further downstream in the Urubamba Valley at Vilcabamba itself, distinct from Pachacuti's earlier royal estate.
Reputable source · 2 sources Potosi's Silver Mountain Fills Spain's Treasury
Spanish conquistadors gained a lasting reputation as gold-seekers, but silver proved far more valuable: over 100 tons of gold were extracted from the Americas between 1492 and 1560, while by 1600 some 25,000 tons of silver had been shipped to Spain. Diego de Huallpa discovered the Potosi mines at Cerro Rico in Bolivia in 1545, and they became the single most spectacular source of wealth in the entire Spanish Empire. At their peak around 1600, the Potosi mines numbered over 600 and collectively yielded roughly 9 million silver pesos a year, more than every other silver mine then operating in the world combined. Extraction relied on forced Indigenous labor, and the Spanish crown took a fixed one-fifth cut, the quinto real, of every bar produced, stamped by a royal representative before shipment back to Spain.
Reputable source · 2 sources- August 1550The Spanish Empire
The Valladolid Debate Argues Whether Indigenous Americans Are Fully Human
Bartolome de las Casas had already presented Philip II with a petition calling for the return of Inca treasures and tributes seized since 1532, but the standard view of the period held that pagan peoples were being justly punished for their own conduct. Juan Gines de Sepulveda, a fellow Dominican, took a public stand against Las Casas, and their opposing views became known as the Valladolid debate after a public discussion at the monastery of San Gregorio in Valladolid in August 1550. Sepulveda argued that peoples of the Americas were natural slaves, so arrangements like the encomienda posed no moral problem and served as a necessary part of civilizing them. Las Casas argued the opposite: that the sophistication of Inca beliefs and culture in particular meant Indigenous Americans should be treated as potential converts deserving respect, not as beasts of burden, though he did view enslaved Africans differently and even encouraged increasing their numbers in the Americas.
Reputable source · 2 sources - 16 January 1556The Spanish Empire
Charles V Abdicates and Splits His Empire in Two
Charles V spent his reign trying to hold together an empire assembled through inheritance rather than conquest, one stretched across Spain, the Netherlands, Austria, Naples, and Spanish America, while fighting France, the Ottoman Empire, and Protestant princes simultaneously. His victory in the 1546-1547 Schmalkaldic War failed to end the Protestant Reformation his own Diet of Worms had tried to suppress in 1521. Worn down by decades of war and unable to achieve the religious and political unity he had spent his life pursuing, Charles abdicated his throne in stages beginning in 1555 and 1556, formally giving the Spanish crown and its American empire to his son Philip II and the Holy Roman Empire to his brother Ferdinand I, splitting the Habsburg inheritance permanently between an Austrian and a Spanish branch.
Reputable source · 2 sources Philip II Builds the Escorial as Monastery, Palace, and Royal Tomb
Philip II founded the Monastery of San Lorenzo de El Escorial in 1563 as a votive monument and pantheon for Spanish monarchs going back to his father, Charles V. Built at the foot of the Sierra de Guadarrama north of Madrid on a plan shaped like a grill, the instrument of Saint Lawrence's martyrdom, its design came from Juan Bautista de Toledo, a Spanish pupil of Michelangelo, and was completed by Juan de Herrera after Toledo's death. The complex combined a monastery, a basilica, a royal pantheon, a palace, a library, a college, and a hospital in one austere structure whose architectural style, a sharp break from earlier Spanish styles, influenced Spanish architecture for more than half a century. Philip, described as a mystic king, used the Escorial as a personal retreat, but by the last years of his reign it had become the center of the greatest political power in the world at that time.
Reputable source · 2 sourcesThe Manila Galleons Link Asia and the Americas
From 1565, Spain used galleon ships to carry silver accumulated at Manila, in the Spanish-controlled Philippines, to Acapulco on Mexico's Pacific coast, then overland or onward to Spain itself. Rather than route around Africa like the Portuguese, Spain sent its Pacific galleons eastward across open ocean, almost all of them built in the Philippines under a law enforced from 1679. Cargoes included silk, porcelain, spices, Persian carpets, jewelry, medicines, Indian cotton, gemstones, and often enslaved people, stored below decks in ships that could weigh up to 2,000 tons. Merchants routinely made 150 to 200 percent profit on their investment; a roll of silk was worth ten times more in the Americas than in Manila. Chinese manufacturers adapted their output to the trade's demand, and Ming porcelain workshops began producing designs specifically aimed at European and American buyers. The trade continued for 250 years, from 1565 to 1815.
Reputable source · 2 sources- 8 October 1565The Age of Exploration
The Manila Galleon Trade Links Asia and the Americas
For decades after Magellan's crossing, Spanish navigators could sail from the Americas to Asia across the Pacific but struggled to find a workable return route against the prevailing winds. In 1565, Andres de Urdaneta charted a path north to catch different wind patterns, and his ship reached the California coast before following the shoreline south to Acapulco, arriving on 8 October 1565. This opened the Manila galleon trade: Spanish ships carried silver mined in the Americas across the Pacific to Manila in the Philippines, trading it for Chinese silk, porcelain, and spices, then returned with those goods to Acapulco. The trade ran annually until 1815.
Reputable source · 2 sources - c. 1568The Spanish Empire
Philip II's Religious Persecution Sparks the Dutch Revolt
Charles V had introduced the Inquisition into the Netherlands, and his son Philip II continued and broadened his father's anti-Protestant policies after taking control of the region in 1555 and becoming king in 1556. Philip's early decrees included a continuance of Charles's 1550 Edict of Blood, reissued in 1556, which banned printing, writing, copying, keeping, or even discussing the works of Martin Luther, John Calvin, and other named reformers. Cardinal Antoine Perrenot de Granvelle enforced these policies until 1564, when Fernando Alvarez de Toledo, the Duke of Alba, took over and pursued Calvinists with such severity that the sitting governor, Margaret of Parma, resigned in protest. Persecutions, high taxes to fund foreign wars, and general discontent over Spanish rule combined to produce sustained armed resistance that became known as the Eighty Years' War.
Reputable source · 2 sources - Late 1500sHistory of Brazil
Sugar Makes Brazil the World's Largest Producer
As the coastal brazilwood was cut out, colonists replaced it with sugarcane. The plantation and mill complex, the engenho, spread fast: the Library of Congress country study records that by 1585 the sugar zones were served by more than sixty mills. World History Encyclopedia states that within a few decades Brazil had become the world's largest producer of sugar, with 60 mills in 1570 rising to 350 by 1645. Sugar was capital-intensive and brutally labor-hungry, and colonists turned first to enslaved Indigenous people and then, as those populations collapsed, increasingly to enslaved Africans.
Reputable source · 2 sources - 7 October 1571The Spanish Empire
The Holy League Destroys the Ottoman Fleet at Lepanto
The Ottoman conquest of Venetian Cyprus in 1570 and 1571 provoked the formation of the Holy League, a coalition of Catholic states organized under Pope Pius V and led by Spain and Venice, commanded by Don Juan of Austria, the illegitimate half-brother of Philip II. A fleet of more than 200 galleys, mainly Venetian and Spanish with squadrons from the Papal States and Genoa, met the Ottoman fleet in the Gulf of Patras near Lepanto on 7 October 1571. The battle was decided by boarding and hand-to-hand fighting rather than gunnery. Though the Christian coalition was outnumbered on the flanks, it triumphed in the center and destroyed the Ottoman fleet, at a cost of about 25,000 Turkish and 8,000 Christian dead.
Reputable source · 2 sources - 1572The Inca Empire
Tupac Amaru's Execution Ends Inca Resistance
Manco Inca's successors held Vilcabamba for decades after his death, but in 1572 a Spanish force under Viceroy Francisco de Toledo captured the last independent Sapa Inca, Tupac Amaru, described by World History Encyclopedia as Thupa Amaru. Toledo's forces took him back to Cuzco, where he was executed, ending the line of independent Inca rulers and any remaining organized state resistance to Spanish rule in Peru. World History Encyclopedia's broader account of the conquest notes that by roughly 1570 around half of the pre-Columbian Andean population had already died from the combined effects of war and disease since the Spanish arrival four decades earlier.
Reputable source · 2 sources - 1576-1587The Age of Exploration
English Explorers Search for a Northwest Passage
With Spain and Portugal controlling the southern sea routes to Asia, English merchants and navigators looked for a passage through or around North America's north coast instead. Martin Frobisher was the first Englishman to search for a Northwest Passage, setting out in 1576; five of his men were captured during the voyage and never seen again. John Davis charted the strait between Baffin Island and Greenland that bears his name in 1587, continuing the search. None of these expeditions found a workable passage; that would not happen until Roald Amundsen's expedition succeeded in 1906.
Reputable source · 2 sources Philip II Annexes Portugal Into an Iberian Union
King Sebastian I of Portugal died in Morocco in 1578 without an heir, and when his elderly great-uncle King Henry died in 1580 the Portuguese throne fell into a succession crisis. Philip II of Spain, who had a hereditary claim, pressed it and in 1580 became Philip I of Portugal, joining the Spanish and Portuguese crowns in what historians call the Iberian Union. By that point Portugal had built a commercial and strategic empire stretching from Goa and Hormuz in the Indian Ocean to Malacca, Macau, Mozambique, and Brazil, all of which now fell under the same monarch who already ruled Spain, Spanish America, the Philippines, and territories in Europe.
Reputable source · 2 sources- 5 August 1583The British Empire
Humphrey Gilbert Claims Newfoundland
Sir Humphrey Gilbert, a Devon-born soldier and half-brother of Walter Raleigh, sailed from England in June 1583 with five ships to find a site for an English colony in North America. His fleet reached St. John's harbour in Newfoundland, already crowded with European fishing vessels. On 5 August 1583 Gilbert formally took possession of Newfoundland and the land 200 leagues to its north and south in the name of Queen Elizabeth I. Merchants and fishermen assembled before his tent while a rod and turf were cut and delivered to him as a token of the soil's transfer, and he proclaimed the land the Queen's in perpetuity, promulgating laws against public religious dissent. Gilbert never established a settlement there. He drowned that September when his small ship, the Squirrel, sank in a storm on the voyage home.
General source · 2 sources - 1585-1590The British Empire
Raleigh's Roanoke Colonies and the Lost Colony
Sir Walter Raleigh sent two colonizing expeditions to Roanoke Island, off the coast of present-day North Carolina. The first, in 1585, was a military garrison of about 108 men under Ralph Lane, delivered by a fleet under Sir Richard Grenville that had been delayed and damaged crossing the Atlantic. Short on supplies and in worsening conflict with the local Roanoke and Secotan peoples, the garrison abandoned the site in 1586. A second expedition of 112 to 121 men, women, and children arrived in 1587 under governor John White, who returned to England for supplies but was delayed three years by war with Spain. When a relief ship finally reached Roanoke in 1590, the colonists had vanished, leaving behind the single word CROATOAN carved into a post and no sign of a struggle. Their fate has never been conclusively established.
Reputable source · 2 sources - 8 August 1588The Spanish Empire
England Defeats the Spanish Armada
Philip II's grievances against Protestant England had been building for years: Elizabeth I's support for the Dutch rebels, English privateers like Francis Drake plundering Spanish treasure ships, and England's rejection of Catholicism. When Drake raided Cadiz in 1587 and destroyed supplies meant for Spain's planned invasion, what Philip called his Enterprise of England was delayed but not abandoned. He assembled an armada of 132 ships carrying 17,000 soldiers and 7,000 mariners, which sailed from Lisbon on 30 May 1588 intending to establish control of the English Channel and link up with a second army in the Netherlands. The Royal Navy met the Armada in the Channel, and thanks to superior maneuverability, better firepower, and English fireships launched on the night of 7 August, the Spanish fleet was forced to break formation. Defeated, the Armada had to sail the long way home around Scotland and Ireland, and storms wrecked more ships along that route; only about half the fleet made it back to Spain.
Reputable source · 2 sources - 1501-1866History of Brazil
Brazil Becomes the Largest Destination of the Atlantic Slave Trade
Brazil received more enslaved Africans than anywhere else in the Americas. Yale University Press states that Portuguese America, Brazil after 1822, received almost five million enslaved Africans between 1501 and 1866. The U.S. National Park Service records that from 1560 to 1850, about 4.8 million enslaved people were transported to Brazil, more than the roughly 4.7 million sent to the Caribbean and vastly more than the fewer than 400,000 carried to North America. The SlaveVoyages database credits the Portugal and Brazil carrier flag with 5,848,266 of the 12,521,337 Africans embarked across the entire trade. Mortality on the crossing, on the plantations, and in the mines was enormous, and even after Brazil's own laws banned the traffic, Yale University Press notes almost one million more individuals were carried into the country illegally in one of the greatest crimes of the nineteenth century.
Primary source · 3 sources - 31 December 1600The British Empire
The East India Company Is Chartered
On 31 December 1600 Queen Elizabeth I granted a royal charter to a group of London merchants trading as the Governor and Company of Merchants of London Trading into the East Indies. The charter, initially limited to fifteen years, gave the company exclusive English trading rights across the entire ocean east of the Cape of Good Hope and west of the Strait of Magellan, aimed at breaking into the spice trade then dominated by the Dutch. The company set up its first Indian trading post at Surat in 1607 and was rechartered as a permanent body in 1609. Its charter permitted it to wage war in pursuit of its trading interests, a power that would prove decisive two centuries later.
Reputable source · 2 sources Cervantes Publishes Don Quixote at the Height of Spain's Golden Age
Miguel de Cervantes Saavedra published El ingenioso hidalgo don Quixote de la Mancha in Madrid in 1605, a novel written as a satire of the chivalric romances so common in Spanish literature at the time. Two competing 1605 editions appeared almost immediately, one pirated in Lisbon and one authorized in Spain, a sign of the book's instant popularity. Don Quixote arrived during the same decades that produced painters Diego Velazquez and El Greco and writers including Pedro Calderon de la Barca, Luis de Gongora, and Lope de Vega, the period historians call the Spanish Golden Age or Siglo de Oro. Velazquez, born in Seville in 1599, rose to become Philip IV's court painter after a 1623 portrait so pleased the king that he decreed no one else would paint him; El Greco, born on Venetian Crete and trained in Venice and Rome, settled in Toledo by 1577 and painted works including a commission from Philip II for the Escorial.
Primary source · 2 sources- 14 May 1607The British Empire
Jamestown Founded in Virginia
Three ships financed by the Virginia Company of London, the Susan Constant, Godspeed, and Discovery, carried 104 English men and boys across the Atlantic, departing in December 1606. On 13 to 14 May 1607 they landed on a peninsula in the James River, sixty miles from the Chesapeake Bay, and named the settlement Jamestown after King James I. The site offered a deep-water harbour but poor soil and swampy, disease-ridden ground. Starvation, disease, and conflict with the Powhatan people killed most of the original settlers within the first years, and the colony survived only after John Rolfe introduced tobacco as a cash crop from 1612. It remained Virginia's capital until 1699.
Reputable source · 2 sources - 9 April 1609The Spanish Empire
Spain Expels the Moriscos
On 9 April 1609, King Philip III secretly signed a decree to expel all Spaniards of Muslim descent, the Moriscos, whose ancestors had been forced to convert to Christianity after Islam was outlawed in Spain in 1502. The decision came after centuries of restrictive measures against religious minorities, Jews first and then Moors, and after a January 1608 Royal Council meeting where mass slaughter of the Moriscos was proposed before expulsion was chosen as the preferred solution instead. The Royal Council, led by the Duke of Lerma, formally decreed the expulsion on 4 April 1609, and it was publicly announced in Valencia that September; a sermon soon after claimed the Moriscos had conspired with the Ottoman Turks to invade Spain. Estimates of the total expelled between 1609 and 1614 range from 300,000 to half a million people, out of a Spanish population of roughly 8 million; contemporary accounts describe tens of thousands dying during the expulsion itself or in the passage abroad, and many who reached North Africa were abused or killed by the Muslim communities they landed among.
Reputable source · 2 sources - 1630-1654History of Brazil
The Dutch Seize Northeast Brazil
Portugal's richest colony drew rivals. The Dutch West India Company, formed in 1621 to trade, plunder, and build American colonies, captured Salvador in 1624 but held it only a year. In 1630 the Dutch grabbed Olinda and Recife, took Pernambuco in 1632, and occupied northern Brazil by 1635, running the region's sugar economy for themselves. Portugal, determined to protect the best asset of its empire, sent an armada of 41 ships and 5,000 men in 1638, but did not regain full control of Brazil until 1654.
Reputable source · 2 sources - 1640sThe British Empire
The Barbados Sugar Revolution
English settlers had grown tobacco and cotton on Barbados since the 1620s with limited success. In the mid-1640s, after Dutch traders fleeing Portuguese Brazil introduced sugar-making techniques and financing, planters converted the island's land almost entirely to sugarcane. The shift, which historians call the Sugar Revolution, consolidated small farms into large plantations and replaced free and indentured labour with enslaved Africans on a mass scale. By the 1670s the Royal African Company's Bridgetown operation supplied enslaved workers who outnumbered white colonists on the island by nearly ten to one.
Reputable source · 2 sources - 24 October 1648The Spanish Empire
The Thirty Years' War Bankrupts Spain and Costs It Portugal
The Thirty Years' War (1618-1648) began as a religious revolt in Bohemia but grew into the last major European conflict fought along Catholic-Protestant lines, killing an estimated 8 million people across four phases of fighting. Catholic Spain backed its Habsburg relatives in the Holy Roman Empire from the start, and by the 1630s Spanish forces were fighting directly against France, even threatening Paris in 1636. The strain of financing this war on top of the ongoing Eighty Years' War against the Dutch proved too much: in 1640, Portugal revolted against its Spanish rulers, permanently ending the 1580 Iberian Union, and Spanish military efforts weakened everywhere else as a result. The war finally ended with the Peace of Westphalia in 1648, a set of treaties that also formally ended the Eighty Years' War between Spain and the Dutch Republic, recognizing Dutch independence outright.
Reputable source · 2 sources - 17th centuryThe Atlantic Slave Trade
Sugar and Tobacco Fix the Plantation System in Place
By the mid-seventeenth century, European colonists in the Caribbean, Brazil, and mainland North America had built distinct plantation economies around enslaved African labor, tied to the particular crop each region grew. Sugar, the most capital-intensive crop, required large enslaved workforces and produced Black population majorities across Brazil and the Caribbean islands. Tobacco in the Chesapeake could turn a profit with smaller numbers of enslaved workers, since planters there could rely on fresh land cleared by enslaved labor rather than the sustained investment sugar demanded. Cotton did not become a dominant crop in the American South until the invention of the cotton gin in the 1790s, after which it would eclipse tobacco and drive the internal expansion of slavery into the Deep South. Each crop, the Lowcountry Digital History Initiative notes, shaped the size and structure of the enslaved labor force differently, but all three depended on it entirely.
Reputable source · 2 sources - May 1655The British Empire
England Seizes Jamaica
Oliver Cromwell's Western Design aimed to seize Spain's American possessions and cripple its silver-based empire. An English fleet under Admiral William Penn and General Robert Venables sailed for Hispaniola in 1654 to 1655, but its assault on Santo Domingo in April 1655 was a costly failure, with roughly a thousand men lost to disease and Spanish resistance. Rather than return home empty-handed, the expedition sailed on to Jamaica, which was sparsely defended, and took the island with little resistance in May 1655. Spain formally ceded Jamaica to England in the 1670 Treaty of Madrid. The colony's main harbour, Port Royal, became a notorious base for English-sponsored privateers and buccaneers who continued raiding Spanish shipping.
Reputable source · 2 sources The Royal African Company Wins a Crown Monopoly on English Slaving
England's first chartered slaving company, the Company of Royal Adventurers, received a royal monopoly in 1660 and an expanded charter explicit about the slave trade in 1663 before collapsing under debt in 1667. It reorganized in 1672 under a new royal charter as the Royal African Company, with a monopoly on English trade along the West African coast, including the exclusive right, in the company's own charter language, to the buying and selling of enslaved people. The company branded captives with the initials RAC or the Duke of York's initials as a mark of ownership before shipment, a practice documented in company records and later court testimony. Between 1672 and the loss of its monopoly in 1698, the Royal African Company transported an estimated 100,000 to 150,000 enslaved Africans to England's American colonies.
General source · 2 sources- 27 September 1672The British Empire
The Royal African Company Is Chartered
King Charles II granted a royal charter to the Royal African Company on 27 September 1672, giving it a monopoly over English trade along roughly 5,000 miles of the West African coast, from Cape Sallee to the Cape of Good Hope. The company, a reorganization of an earlier Company of Royal Adventurers founded in 1660, traded chiefly in enslaved people, gold, and ivory in exchange for manufactured goods. Between 1672 and 1731 the Royal African Company shipped an estimated 186,748 enslaved Africans to the Americas across 652 voyages, more than any other single institution in the history of the Atlantic slave trade, before losing its legal monopoly in 1698 and finally abandoning the slave trade for ivory and gold in 1731.
Primary source · 2 sources - February 18, 1688The Atlantic Slave Trade
Germantown Quakers Write the First Formal Antislavery Protest in the Colonies
In 1688, Francis Daniel Pastorius, a German-born attorney who had founded Germantown, Pennsylvania five years earlier, drafted a formal antislavery resolution together with three fellow Quakers living in the settlement. The petition argued from the Bible's golden rule, that people should treat others as they would wish to be treated, and asserted that every human being, regardless of belief, color, or ethnicity, held rights that slavery violated. The Germantown Meeting passed the petition up through the Quaker organizational hierarchy, to the Monthly Meeting at Dublin, the Quarterly Meeting in Philadelphia, and finally the Yearly Meeting in Burlington, New Jersey, which declined to take a position for or against slavery and set the petition aside. The document was effectively forgotten until it was rediscovered in 1844 and embraced by the American abolitionist movement then gathering strength, only to be misplaced again and rediscovered a second time in 2005 in a Philadelphia meetinghouse vault.
Primary source · 2 sources - 1690s-1700sHistory of Brazil
The Gold Rush Transforms Minas Gerais
The discovery of gold by Paulistas, the frontier explorers known as bandeirantes, in various parts of what is now Minas Gerais probably occurred between 1693 and 1695, though word spread slowly at first. Then the rush came. By 1709 some 30,000 people were in Minas Gerais, and by 1735 tax records showed 100,141 slaves in the mining district, many of them Indigenous. World History Encyclopedia records that by 1711 the annual amount of Brazilian gold legally shipped to Portugal had risen to almost 15,000 kilograms, later peaking above 30,000 kilograms a year. The boom drew population and wealth from the coast into the interior and made Rio de Janeiro, the nearest port, the colony's new center of gravity.
Reputable source · 2 sources The War of the Spanish Succession Ends the Habsburg Line in Spain
King Charles II of Spain, the last Habsburg ruler of Spain, was childless and in poor health for most of his reign. When he died in November 1700, his will left the entire Spanish Empire to Philip of Anjou, grandson of Louis XIV of France and a member of the Bourbon dynasty, rather than to the rival Habsburg claimant, Archduke Charles of Austria. Louis XIV supported his grandson's claim, and Philip was crowned King Philip V of Spain on 16 November 1700. England, the Dutch Republic, the Holy Roman Empire, and other powers formed a Grand Alliance in 1701, unwilling to let a Bourbon on the Spanish throne create a union of French and Spanish power under one family. Thirteen years of war followed across Europe, from the Spanish Netherlands to Italy, with major battles like Blenheim, Turin, and Malplaquet, before peace negotiations confirmed Philip as King of Spain in 1714 while stripping Spain of its European territories outside Iberia.
Reputable source · 2 sources- 1 May 1707The British Empire
The Acts of Union Create Great Britain
Following the Treaty of Union agreed in July 1706, the Parliament of Scotland and the Parliament of England each passed an Act of Union, and on 1 May 1707 the two countries were, in the Act's own words, 'United into One Kingdom' called Great Britain, with a single Parliament sitting at Westminster. Scotland retained its own legal system and Presbyterian church establishment under separate guarantees, and gained 16 seats in the House of Lords and 45 in the House of Commons. The merged Parliament first met that October. Responsibility for governing Scotland now sat with ministers in London, an arrangement worked out haltingly over the following decades.
Primary source · 2 sources - 18th centuryThe Atlantic Slave Trade
Liverpool, Bristol, and Nantes Grow Rich on the Triangular Trade
By the early eighteenth century the transatlantic slave trade operated on a three-legged route that historians call the triangular trade. Ships left European ports, chiefly Liverpool, Bristol, and Nantes, loaded with manufactured goods: iron bars, textiles, firearms, and liquor. On the West African coast, traders exchanged these goods for captive Africans purchased from African merchants and rulers. The ships then crossed the Atlantic on the Middle Passage and sold survivors in the Americas, before loading sugar, tobacco, cotton, and other colonial products for the return voyage to Europe, completing the cycle. Liverpool overtook Bristol as Britain's leading slaving port by 1750 and by the period 1793 to 1807 accounted for roughly 85 percent of all British slaving voyages. The profits reshaped these cities: warehouses, docks, insurance markets, and elegant townhouses in Liverpool, Bristol, Nantes, and Bordeaux were built substantially on capital earned from the trade.
General source · 2 sources - 17th-18th centuriesThe Atlantic Slave Trade
Maroon Communities Carve Out Freedom in the Mountains and Forests
Across the Americas, enslaved Africans who escaped plantations formed maroon communities in terrain too remote or difficult for colonial militias to easily reach, mountainous interiors in Jamaica, forested river borders in Suriname, and similar refuges elsewhere. In Jamaica, Maroon communities in the eastern mountains fought British colonial forces to a standstill for decades; unable to defeat them, the British colonial government signed treaties with the Leeward Maroons in 1738 and the Windward Maroons in 1739, granting them recognized autonomy. In Suriname, which passed from English to Dutch control under the 1667 Treaty of Breda, enslaved people who escaped plantations along the Commewijne and Marowijne Rivers built their own villages from the late seventeenth century onward; the Ndyuka Maroons there signed a peace treaty with Dutch authorities in 1760, drafted in part by a formerly enslaved man from Boston named Adyako Benti Basiton, that granted them territorial autonomy. Maroon communities descended from these settlements, including Jamaica's Charles Town, Moore Town, Accompong Town, and Scott's Hall, survive today.
Primary source · 2 sources - September 9, 1739The Atlantic Slave Trade
Twenty Enslaved Men Rise Up at the Stono River
Early on Sunday, September 9, 1739, a group the colonial record calls Angola Negroes, numbering about twenty and led by a man named Jemmy, gathered near the Stono River roughly twenty miles from Charleston, South Carolina. They broke into a store belonging to a Mr. Hutchenson, killed the two storekeepers they found there, and armed themselves with the guns and powder inside. Beating drums and calling out for liberty, the group marched south toward Spanish Florida, where a Spanish proclamation had promised freedom to enslaved people escaping British colonies, recruiting more enslaved people and burning houses as they went, sparing at least one enslaver known to treat enslaved people kindly. Colonial militia caught up with them that afternoon; more than twenty white colonists and roughly forty Black South Carolinians were killed before the uprising was suppressed, with surviving participants later tried and executed.
Primary source · 2 sources - 18th century (typical of the crossing, 1501-1866)The Atlantic Slave Trade
The Middle Passage Kills Roughly One in Seven Who Board
Enslaved Africans forced aboard slave ships were packed into spaces built to maximize the number carried rather than to keep people alive, chained below decks with barely room to turn over, for a crossing that typically took six to ten weeks. According to the Trans-Atlantic Slave Trade Database, of an estimated 12.5 million people embarked on slave ships across the trade's entire span, roughly 10.7 million disembarked alive in the Americas, meaning nearly 1.8 million died during the crossing itself. Mortality rates were highest in the sixteenth century, close to 30 percent of those embarked, and fell to below 15 percent by the trade's final decades as ship design and provisioning improved, though improvement here meant preserving profit rather than reducing suffering. Voyages to the Spanish Americas had the highest death rates of any route; voyages to Brazil had the lowest, though still close to one in eight. Disease, dehydration, suffocation, violence by crew, and suicide by captives who threw themselves overboard all contributed to the toll, and historians note that the true death toll of the trade, counting deaths during capture, the march to the coast, and the first year after arrival, was substantially higher than the deaths recorded at sea alone.
Primary source · 3 sources - 23 June 1757The British Empire
The Battle of Plassey
On 23 June 1757, at Plassey in north-east India, an East India Company force of roughly 3,000 men under Lieutenant-Colonel Robert Clive, including about 2,100 Indian sepoys and 800 Europeans, faced the army of Siraj-ud-Daulah, the Nawab of Bengal, which numbered around 50,000 troops including 16,000 cavalry and French-manned artillery. The battle turned on treachery rather than force of arms: Mir Jafar, who commanded the Nawab's cavalry, had secretly agreed with Clive beforehand to hold his troops back from the fighting in exchange for being installed as the new Nawab if Siraj was defeated. With Mir Jafar's forces standing idle, Siraj's army collapsed. The Company placed Mir Jafar on the throne and took direct control of Bengal's tax revenues.
Reputable source · 2 sources - c. 1765-1790sThe Spanish Empire
The Bourbon Reforms Modernize Spain's Colonial Administration
Beginning with Charles III's reign, Spain's Bourbon monarchs introduced sweeping changes to colonial administration designed to increase crown revenue and reassert control that had loosened over two centuries. Spain introduced a system of intendancies, administrative units run by appointed governors, intendentes, who answered directly to the crown rather than to local viceroys, replacing older, more corruptible arrangements. Research on the reform's economic effects finds it substantially increased crown revenue and reduced the exploitation of Indigenous communities that flourished under the older system, but it also generated serious tension with local colonial elites, the criollos, who found themselves shut out of the powerful new intendant posts, which went almost exclusively to men born in Spain.
Reputable source · 2 sources - February-March 1766The Atlantic Slave Trade
Malagasy Captives Seize the Meermin off the Cape
The Dutch East India Company slave ship Meermin left Madagascar in January 1766 bound for the Cape Colony in southern Africa, carrying roughly 140 Malagasy captives. The ship's chief merchant, hoping to reduce deaths from disease among people held shackled in overcrowded conditions, had the captives unshackled and, in mid-February, ordered them to clean a stock of Madagascan weapons being carried in the hold. The Malagasy used the weapons to seize the ship instead, killing roughly half the Dutch crew during the uprising while losing close to 30 of their own. The two sides reached a truce in which the crew agreed to sail back to Madagascar, but the remaining Dutch sailors deceived the Malagasy, who lacked navigational knowledge, and steered instead toward the South African coast, telling the captives the land they saw was still part of Madagascar. The ship ran aground near the mouth of the Heuningnes River, and the Malagasy were recaptured and enslaved at the Cape after all. A Dutch East India Company court later found the ship's captain guilty of negligence and banned him from the company and the colony for life, while the mutiny's leader, a man named Massavana, was spared execution but imprisoned for life on Robben Island.
Reputable source · 2 sources - 1769-1770The British Empire
The Great Bengal Famine of 1770
Failed rice harvests in 1768 and 1769, worsened by a smallpox epidemic and peasant migration, produced a catastrophic famine across Bengal and Bihar in 1769 and 1770, remembered in Bengali as Chhiattor-er Monnontor, the Famine of '76. Contemporary and later estimates of the dead range as high as ten million, roughly a third of the affected population, though modern historians treat the highest figures as uncertain given the poor demographic records of the time. The East India Company, which had held the right to collect Bengal's revenue since 1765, continued to press for tax payments through the crisis: British Library India Office records show land tax collection in the famine year of 1770-71 exceeded that of the pre-famine year of 1769-70, and administrators including Reza Khan faced later accusations of profiting from grain monopolies during the famine.
Reputable source · 2 sources - June 22, 1772The Atlantic Slave Trade
Lord Mansfield Rules Slavery Has No Basis in English Law
James Somerset, an enslaved man purchased in Virginia by the merchant Charles Steuart, was brought by Steuart to England in 1769. In 1771 Somerset left Steuart's service; when he was recaptured and held aboard a ship bound for sale in Jamaica, the abolitionist Granville Sharp, who had spent years searching for a case to challenge slavery's legal standing in England, took up Somerset's cause and secured a writ of habeas corpus. Lord Chief Justice Mansfield of the Court of King's Bench heard arguments over several months before ruling, on June 22, 1772, that Charles Steuart had no lawful right to seize Somerset and forcibly remove him from England to be sold abroad. Mansfield deliberately kept his ruling narrow, resting it on the specific act of forcible removal rather than declaring slavery itself illegal in England, but his opinion held that slavery could only exist by positive law, not by custom, and no English statute had ever established it.
Primary source · 2 sources - November 29, 1781The Atlantic Slave Trade
The Zong's Crew Throws 132 Enslaved People Overboard for an Insurance Claim
The British slave ship Zong, owned by a Liverpool trading syndicate led by William Gregson, left West Africa overloaded with roughly 470 captive Africans and a crew of only seventeen. Navigational errors extended the voyage far beyond its expected length, and by late November 1781 disease had already killed several crew members and more than 50 captives as food and drinking water ran low. Starting November 29, 1781, the ship's captain, Luke Collingwood, ordered the crew to begin throwing captives overboard, reasoning that if they died of thirst or illness aboard ship the loss would not be covered by insurance, but if they were thrown into the sea while still alive, their deaths could be claimed as a jettisoned cargo loss. Over the following days the crew threw 132 sick and dying captives into the ocean; roughly ten more jumped overboard rather than submit. When the ship reached Jamaica, Gregson's syndicate filed an insurance claim for the captives as lost cargo. The insurers refused to pay, and the resulting court case, Gregson v Gilbert, centered entirely on whether the deliberate killing of enslaved people constituted a legitimate insurance loss. No crew member was ever criminally prosecuted for the deaths.
General source · 2 sources - 3 September 1783The British Empire
Britain Loses the American Colonies
Resentment over taxation without parliamentary representation drove Britain's thirteen American colonies into open revolt from 1775. French intervention on the American side from 1778 turned a colonial rebellion into a wider war Britain fought without a European ally. After the decisive American and French victory at Yorktown in 1781, peace negotiations dragged through 1782, and the Treaty of Paris was signed on 3 September 1783. Britain formally recognized the independence and sovereignty of the United States, ceded territory east of the Mississippi River, resolved Newfoundland fishing rights and prewar debts, and agreed to evacuate its remaining forces from the thirteen states.
Primary source · 2 sources - May 22, 1787The Atlantic Slave Trade
Twelve Men in a Quaker Print Shop Found the British Abolition Committee
On May 22, 1787, twelve men met in a Quaker print shop on George Yard, off Lombard Street in London, and formed the Society for Effecting the Abolition of the Slave Trade. Nine of the twelve were Quakers, who had been building antislavery sentiment within their own religious community for decades; the remaining three, including the group's most tireless researcher, Thomas Clarkson, were Anglican. Clarkson had won a Cambridge University essay prize in 1785 for an essay asking whether it was lawful to enslave people without their consent, and his research into the subject had left him, in his own account, horrified enough to abandon his plan to enter the clergy and devote himself to the cause instead. As the only committee member without other business commitments, Clarkson traveled to every major British slaving port, gathering evidence, ship diagrams, and testimony from sailors and surgeons that he then supplied to William Wilberforce for use in Parliament.
Primary source · 2 sources - 26 January 1788The British Empire
The First Fleet Founds Colonial Australia
The First Fleet, eleven Royal Navy and convict transport ships under Captain Arthur Phillip, left Portsmouth in May 1787 carrying more than 1,400 convicts, marines, and officials. After an eight-month voyage the fleet reached Botany Bay on 18 to 20 January 1788, but Phillip judged the site too exposed and short of fresh water. On 26 January 1788 he moved the fleet to Sydney Cove in Port Jackson and began establishing a convict settlement there. Between 1788 and 1868 Britain transported more than 162,000 convicts to Australia's penal colonies, with about 7,000 arriving in 1833 alone.
Primary source · 3 sources - 1789 (narrative published; crossing occurred c. 1756)The Atlantic Slave Trade
Olaudah Equiano Describes His Own Crossing
Olaudah Equiano, kidnapped from what he identified as the Igbo region of West Africa as a child and eventually enslaved in the British Caribbean and North America, published The Interesting Narrative of the Life of Olaudah Equiano in 1789 after buying his own freedom. In it he described being loaded onto a slave ship and packed below deck among people so crowded each had scarcely room to turn himself. He wrote that the closeness of the space and the heat produced constant sweating, that the air became unbreathable from the resulting stench, and that sickness spread and killed many of the people chained around him, whom he called victims of what he termed the improvident avarice of the men who had purchased them. Equiano survived the crossing and went on to become a leading voice in the British abolition movement, testifying before Parliament and touring the country to sell his narrative and speak against the trade.
Primary source · 3 sources - 1776-1800The Atlantic Slave Trade
The Trade Reaches Its Highest Volume in the Late Eighteenth Century
According to the Trans-Atlantic Slave Trade Database's decade-by-decade tally of documented and estimated voyages, the quarter-century from 1776 to 1800 saw more Africans embarked on slave ships, over two million people, than any other twenty-five-year span in the trade's roughly 400-year history. The preceding twenty-five years, 1751 to 1775, had already carried close to 1.93 million, meaning the trade's final major decades before serious abolition efforts began were also its largest by volume. British, French, and Portuguese traders all expanded shipments through this period to meet the labor demands of an expanding plantation system across the Caribbean, Brazil, and the American South.
Primary source · 2 sources - August 21, 1791 (revolution to January 1, 1804)The Atlantic Slave Trade
The Only Successful National Slave Revolt Creates Haiti
On August 21, 1791, enslaved people in the French colony of Saint-Domingue, the wealthiest slave colony in the Americas and the world's leading producer of sugar and coffee, rose in a coordinated rebellion against the colony's planters, inspired in part by news of the French Revolution's declarations of universal rights. By 1792 the rebels controlled roughly a third of the colony, and the fighting continued to escalate despite reinforcements France sent to suppress it. Toussaint Louverture, a formerly enslaved man, emerged as the revolution's most significant military and political leader, transforming what began as a fragmented uprising into an organized army and government, though he died in French custody in 1802 before the war's end. Fighting continued after his death, and on January 1, 1804, the colony's forces declared independence as Haiti, the first nation in the Americas to abolish slavery through its own revolution and the first republic in the world founded and led by formerly enslaved people of African descent.
Reputable source · 2 sources - 25 March 1807The British Empire
Parliament Abolishes the Slave Trade
Campaigners including Thomas Clarkson, Granville Sharp, and William Wilberforce had pressed Parliament since founding the Society for the Abolition of the Slave Trade in 1787. After repeated failed bills, the Slave Trade Act passed the Commons by 283 votes to 16, far beyond expectations, and received royal assent on 25 March 1807, taking effect that May. The Act prohibited British subjects from buying, selling, or transporting enslaved people across the Atlantic, and the Royal Navy began patrolling West African waters to intercept trafficking ships. It did not free a single person already enslaved in Britain's colonies.
Reputable source · 2 sources - March 25, 1807The Atlantic Slave Trade
Britain Outlaws the Slave Trade, Though Not Slavery Itself
After two decades of campaigning by the Society for Effecting the Abolition of the Slave Trade, Prime Minister Lord Grenville introduced the Slave Trade Abolition Bill in the House of Lords on January 2, 1807. Its introduction by the head of government marked abolition as official policy for the first time, and the bill passed its second reading in the Lords 100 votes to 34 despite opposition from peers with financial interests in West Indian plantations. William Wilberforce, who had led the parliamentary campaign since 1787 after being persuaded by Thomas Clarkson's research, steered the bill through the Commons. The bill received royal assent on March 25, 1807, making it illegal from May 1, 1807 for any British ship or subject to trade in enslaved people, though it did not free a single person already enslaved in Britain's colonies.
Primary source · 3 sources - January 1, 1808The Atlantic Slave Trade
The United States Bans the Importation of Enslaved People
Article I, Section 9 of the US Constitution barred Congress from prohibiting the importation of enslaved people before 1808, a compromise struck at the Constitutional Convention to secure Southern states' support. An 1800 act of Congress had already made it illegal for Americans to participate in the international slave trade between other countries and authorized US authorities to seize violating ships. Congress then passed the Act Prohibiting the Importation of Slaves, which took effect on January 1, 1808, the earliest date the Constitution permitted, making it illegal to bring enslaved people into any US port from a foreign country. The law imposed real penalties, including fines and imprisonment, on Americans who violated it. It did not, however, end slavery within the United States or prohibit the sale and transport of already-enslaved people between American states, a domestic trade that would grow substantially in the decades that followed.
Primary source · 2 sources - 1807-1808History of Brazil
The Portuguese Court Flees to Rio de Janeiro
As the French army approached Lisbon in November 1807, the Portuguese Crown faced a choice between losing Portugal to the French and having the British seize Brazil, or moving the crown to Brazil. It chose to sail. Prince Regent Dom Joao, ruling for his incapacitated mother, evacuated the royal family and some 15,000 courtiers to Rio de Janeiro under British naval protection, arriving in 1808. The colony suddenly became the seat of a European monarchy. In 1815 the Crown raised Brazil to a kingdom equal with Portugal, and when the old queen died in 1816, Joao was acclaimed King Joao VI.
Reputable source · 2 sources - 1810s-1860sThe Atlantic Slave Trade
The Domestic Trade Forces a Million More South After Importation Ends
After the United States banned the importation of enslaved people from abroad in 1808, the domestic slave trade within the country's borders grew to fill the labor demand the international ban could no longer meet, particularly as the cotton gin made cotton newly profitable across the Deep South. Enslavers in the Upper South, in states like Virginia, Maryland, and North Carolina, where declining soil fertility had made tobacco less profitable, increasingly sold enslaved people to planters establishing new cotton plantations in Mississippi, Alabama, and Louisiana. Historian Walter Johnson's estimate, cited by America's Black Holocaust Museum, puts the number of enslaved people forcibly relocated from the Upper South to the Lower South at approximately one million, roughly two-thirds of them moved through the organized domestic slave trade rather than by enslavers relocating with the people they already held. This forced migration, which historians call the Second Middle Passage, was more than twice the scale of the transatlantic Middle Passage in terms of people directly affected.
Primary source · 2 sources - 24 June 1821The Spanish Empire
Bolivar and San Martin Lead the Wars That End Spanish Rule on the Mainland
Napoleon's occupation of Spain in 1808 shattered the assumption of Bourbon authority across the Spanish Americas, triggering uprisings that would take over two decades to run their course. Simon Bolivar led patriot forces that, after early defeats, won at the Battle of Boyaca on 7 August 1819 and entered Bogota to celebration; by the end of that year he had established Gran Colombia, encompassing much of modern Venezuela, Colombia, Panama, and Ecuador. Victory at the Battle of Carabobo on 24 June 1821 secured Venezuelan independence permanently, and Bolivar's armies went on to liberate Ecuador and Peru as well. Jose de San Martin led parallel campaigns from the south, and between the two commanders, by 1826 all of mainland Latin America except the coastal fortifications at Veracruz, Callao, and Chiloe had slipped from Spanish control; the United States recognized Chile, the United Provinces of the Rio de la Plata, Peru, Gran Colombia, and Mexico as independent in 1822, and Britain followed in 1825.
Reputable source · 2 sources - 7 September 1822History of Brazil
Brazil Declares Independence Under Pedro I
After King Joao VI returned to Lisbon in 1821, the Portuguese parliament tried to reduce Brazil back to colonial status and recall his son, Prince Pedro. Pedro refused. In a famous scene at Ipiranga on September 7, 1822, the Library of Congress country study records, he had to choose between returning to Portugal in disgrace or opting for independence, and he chose independence: his motto, he said, would be Independence or Death. Pedro had already declared himself perpetual defender of Brazil in May. He was crowned Pedro I, first Emperor of Brazil, and Britain and Portugal recognized Brazilian independence by treaty on August 29, 1825.
Reputable source · 2 sources - 1830s-1860sThe Atlantic Slave Trade
Auction Blocks in Charleston and New Orleans Turn People Into Listed Merchandise
By the early nineteenth century, cities across the American South, most prominently Charleston and New Orleans, hosted regular public slave auctions in hotels, courthouses, and dedicated auction houses. A surviving broadside advertised a court-ordered sale at the Charleston courthouse on January 10, 1859, listing 99 enslaved men, women, and children by first name and age, grouped in numbered lots, with handwritten annotations from prospective buyers or auctioneers reading healthy, very fine, sold privately, dead, shot in leg, breeding, leg broke, and lost a toe. In New Orleans, auctions regularly advertised individuals by name and skill, such as a broadside naming Isam, described as a superior engineer and blacksmith, and Pauline, described as speaking French and English, framing enslaved people's labor and their bodies as the two things being sold. New Orleans became one of the largest slave markets in the country from roughly 1830 until the Civil War, with auctions held in its major hotels and dedicated slave depots and showrooms lining its most frequented streets.
Primary source · 2 sources - August 1833The British Empire
The Slavery Abolition Act Ends Slavery in the Empire
In August 1833 Parliament passed the Slavery Abolition Act, ending slavery across most of the British Empire, though not in territories controlled by the East India Company. The Act converted enslaved people into unpaid apprentice labourers bound to their former masters, a status that continued for years after nominal abolition, with only children under six freed immediately. West Indian slaveholders were compensated collectively with £20 million, about 40 percent of British government spending that year, distributed through more than 40,000 separate claims. Around 800,000 enslaved people were recorded in the compensation process; none of them received any payment.
Primary source · 2 sources - August 28, 1833The Atlantic Slave Trade
Britain Abolishes Slavery Itself Across Its Empire
Twenty-six years after Britain outlawed the transatlantic slave trade in 1807, Parliament passed the Slavery Abolition Act on August 28, 1833, ending slavery itself across most of the British Empire, effective the following year. The gap between the two laws reflected the reality that banning the trade had not freed a single enslaved person already living in Britain's colonies; abolitionists including William Wilberforce, who died just days after the act's passage, had spent the intervening decades pressing for full emancipation on top of the earlier trade ban. The law included a period of compulsory unpaid apprenticeship for many of the newly freed and paid twenty million pounds in compensation to former slaveholders for the loss of what the law treated as their property, a sum that took British taxpayers until 2015 to finish paying off, while formerly enslaved people themselves received no compensation.
Reputable source · 2 sources - July 2, 1839The Atlantic Slave Trade
Enslaved Sailors on the Amistad Seize Their Ship
In February 1839, Portuguese slave traders abducted a group of Africans from Sierra Leone in violation of existing treaties banning the trade and shipped them to Havana, Cuba. Two Spanish planters, Pedro Montes and Jose Ruiz, purchased 53 of the captives and put them aboard the schooner Amistad to be transported to a Cuban plantation. On July 2, 1839, the captives, led by a man named Sengbe Pieh, known in American accounts as Joseph Cinque, seized the ship, killing the captain and the ship's cook. They spared Montes and Ruiz on condition the men sail them back to Africa, but Montes secretly steered the ship north instead, and on August 26, 1839, the US brig Washington intercepted the Amistad off Long Island. The Africans were jailed on murder charges, which were later dismissed, while a separate legal battle over their status as property or as free, illegally kidnapped people proceeded through US courts. On March 9, 1841, the US Supreme Court ruled that the Africans had been illegally enslaved to begin with and had exercised a legitimate right to fight for their freedom, ordering their release.
Primary source · 2 sources - 18 July 1841History of Brazil
Pedro II Takes the Throne of the Empire
Pedro I abdicated in 1831 and left for Portugal, leaving his young son as heir under a regency. Pedro I's death from tuberculosis in 1834 sapped the movement to restore him, and the regency years were unstable. To end the turmoil, politicians declared the boy-emperor of age early: he ascended the throne on July 18, 1841, at age fifteen instead of the constitutionally specified age of eighteen. Thus, the Library of Congress country study records, the second empire was born, in the hope that it would be an instrument of national unity, peace, and prosperity. Pedro II would reign for nearly fifty years, using his constitutional moderating power to balance liberal and conservative cabinets.
General source · 2 sources - 29 August 1842The British Empire
The First Opium War and the Treaty of Nanjing
British merchants had built a lucrative trade smuggling opium grown in India into China, reversing Britain's trade deficit and creating mass addiction that Chinese authorities tried to suppress by destroying opium stockpiles at Canton in 1839. Britain responded with a war fought largely at sea, where its modern steam-powered navy overwhelmed Qing forces. Negotiations were held aboard the British warship HMS Cornwallis, anchored in the Yangtze, and the Treaty of Nanjing was signed on 29 August 1842. China ceded Hong Kong Island to Britain, opened five treaty ports including Shanghai and Canton to Western trade, and agreed to pay a substantial indemnity for the destroyed opium.
Reputable source · 2 sources - 1845-1852The British Empire
The Great Famine in Ireland
A strain of the water mould Phytophthora infestans, causing potato blight, reached Ireland in 1845 and destroyed much of the crop that a third of Ireland's population relied on as its primary food source. The blight recurred across the whole country over the following years, at its worst in 1847, remembered as Black '47. Although Irish MPs and landowners in Parliament were aware of the unfolding crisis, large quantities of food continued to be exported from Ireland to Great Britain throughout the blight years. Roughly one million people died of starvation and related disease, and at least another million emigrated, reducing Ireland's population from about 8.5 million before the famine to 4.4 million by 1901.
Reputable source · 2 sources - September 1850The American Civil War
Congress Passes the Compromise of 1850
Henry Clay introduced a package of resolutions in the Senate on January 29, 1850, trying to head off a crisis over slavery in the territories won from Mexico. After months of debate, and with Stephen Douglas breaking the package into separate bills that could each find a majority, Congress passed five measures between September 9 and 20, 1850. California entered the Union as a free state, tipping the Senate's balance away from slave states for good. Utah and New Mexico territories were organized without any restriction on slavery, to be decided later by their own settlers. The slave trade, though not slavery itself, was banned in Washington, D.C. In exchange for the North's gains, Congress wrote a much stronger Fugitive Slave Act, backed by federal commissioners and marshals, to force the return of enslaved people who had escaped to free states.
Primary source · 2 sources - September 18, 1850The American Civil War
The Fugitive Slave Act Turns the North into an Enforcement Zone
The Fugitive Slave Act, signed by President Millard Fillmore as part of the Compromise of 1850, created a corps of federal commissioners with the power to issue certificates returning an alleged escaped slave to bondage. The accused could not testify on their own behalf, had no right to a jury trial, and commissioners were paid ten dollars for a certificate of rendition versus five dollars if they ruled the person free, a fee structure critics immediately called a bribe toward slavery. Any citizen could be legally compelled to assist in a capture, and anyone who helped a fugitive escape or obstructed an arrest faced fines and imprisonment. The law applied even to Black people who had lived free in the North for years, since claimants needed only an affidavit, not proof, to a commissioner's satisfaction.
Primary source · 2 sources - May 30, 1854The American Civil War
The Kansas-Nebraska Act Repeals the Missouri Compromise
Senator Stephen Douglas of Illinois introduced a bill in January 1854 to organize the Nebraska Territory, land he wanted opened for a transcontinental railroad running through Chicago. To win Southern votes, Douglas built the bill around popular sovereignty: the settlers of a territory, not Congress, would vote on whether to permit slavery there. Because the Nebraska Territory sat north of the 36°30' line where the 1820 Missouri Compromise had banned slavery outright, Douglas's bill effectively repealed that thirty-four-year-old ban. Congress split the territory into Kansas and Nebraska and passed the act on May 30, 1854, with President Franklin Pierce's signature.
Primary source · 2 sources - May 21-24, 1856The American Civil War
Bleeding Kansas: Proslavery and Free-State Settlers Go to War
Once Kansas Territory opened to settlement under popular sovereignty, proslavery Missourians, free-state New Englanders, and settlers of every stripe flooded in to try to swing the vote on slavery. On May 21, 1856, a proslavery posse under Sheriff Samuel Jones sacked the free-state town of Lawrence, burning the Free State Hotel and destroying two newspaper presses. Three days later, on May 24, the militant abolitionist John Brown led four of his sons and three other men to Pottawatomie Creek, where they dragged five proslavery settlers, including James Doyle and his two teenage sons, from their homes at night and hacked them to death with broadswords. The bloodshed continued as guerrilla raids and reprisals for years afterward, killing an estimated 55 people between 1854 and 1861.
Reputable source · 2 sources - March 6, 1857The American Civil War
Dred Scott v. Sandford Denies Black Americans Citizenship
Dred Scott, an enslaved man who had lived with his owner in the free state of Illinois and the free Wisconsin Territory before returning to Missouri, sued for his freedom on the grounds that residence on free soil had made him free. The Supreme Court ruled against him 7-2. Chief Justice Roger B. Taney's majority opinion went further than the case required, holding that no Black person, free or enslaved, could ever be a citizen of the United States and therefore had no standing to sue in federal court at all. Taney also ruled that Congress had no power to ban slavery in the territories, which meant the Missouri Compromise had been unconstitutional even before Kansas-Nebraska repealed it, and that slaveholders could bring enslaved people into any territory without losing their property rights.
Primary source · 2 sources - 2 August 1858The British Empire
The Indian Rebellion and the Transfer to Crown Rule
The rebellion began at Meerut on 10 May 1857, when 85 sepoys of the 3rd Bengal Light Cavalry, jailed for refusing to use rifle cartridges rumoured to be greased with animal fat, were freed by their comrades, who then killed Europeans in the area and marched on Delhi. The uprising spread across northern and central India before Company and British forces crushed it in brutal fighting on both sides through 1858. In its aftermath, Parliament passed the Government of India Act on 2 August 1858, liquidating the East India Company and transferring its territories, armies, and administrative functions directly to the British Crown. The Governor-General gained the additional title of Viceroy, and a new India Office in London, headed by a Secretary of State, took over policy for the subcontinent.
Reputable source · 2 sources - October 16-18, 1859The American Civil War
John Brown Raids the Harpers Ferry Armory
John Brown, fresh from the Kansas violence, spent the summer of 1859 gathering men and weapons at the rented Kennedy Farm in Maryland under the alias Isaac Smith. On the night of October 16, Brown led 21 men, Black and white, including his sons Oliver and Owen, into Harpers Ferry, Virginia, and seized the federal armory and arsenal, hoping to arm enslaved people who would rise up and join him. No mass uprising came. Local militia and townspeople surrounded Brown's men, who fell back into the armory's fire engine house. U.S. Marines under Colonel Robert E. Lee stormed the building on the morning of October 18, killing or capturing most of the raiders. Ten raiders died, including two of Brown's sons; Brown himself was wounded, tried for treason, and hanged in Charles Town on December 2, 1859.
Reputable source · 2 sources - November 6, 1860The American Civil War
Lincoln Wins the Presidency Without a Single Southern Vote
Abraham Lincoln won the Republican nomination on May 16, 1860, beating better-known rivals in a party whose platform pledged to keep slavery out of the territories while leaving it alone where it already existed. The Democratic Party had split into Northern and Southern factions, and a fourth candidate ran for the Constitutional Union Party, splitting the anti-Lincoln vote four ways. On election day, Lincoln voted a straight Republican ticket in Springfield, Illinois, then waited at the telegraph office; by midnight he learned he had won the Electoral College decisively despite carrying not a single slave state and appearing on the ballot in none of them. Turnout was over 81 percent of eligible voters, among the highest in American history.
Primary source · 2 sources - December 20, 1860The American Civil War
South Carolina Secedes, Naming Slavery as the Cause
A South Carolina convention voted unanimously to secede on December 20, 1860, becoming the first state to leave the Union. Four days later the convention issued a Declaration of the Immediate Causes, spelling out its reasoning in its own words rather than leaving it to later interpretation. The document complains that non-slaveholding states have refused to enforce the Fugitive Slave Act, have permitted abolition societies to operate, and have elected a president, Lincoln, whose party holds that slavery is wrong. It states plainly that the Northern states' hostility to "the institution of slavery" has released South Carolina from its constitutional obligations. Mississippi, Florida, Alabama, Georgia, Louisiana, and Texas followed by February 1, 1861, each producing similar declarations.
Primary source · 2 sources - January 9, 1861The American Civil War
Mississippi's Declaration Calls Slavery Its "Greatest Material Interest"
Mississippi became the second state to secede, on January 9, 1861, and its convention adopted a formal Declaration of the Immediate Causes explaining why. The document states outright that Mississippi's position is "thoroughly identified with the institution of slavery, the greatest material interest of the world," and that its economy depends on cotton grown by enslaved labor. It lists grievances against the North almost entirely tied to slavery: interference with the Fugitive Slave Act, agitation for abolition, and fear that a Republican administration would eventually move to end slavery nationwide. The declaration frames secession as a defense against what it calls "utter subjugation" and the loss of property "worth four billions of money," a direct reference to the market value of enslaved people.
Primary source · 2 sources - February 18, 1861The American Civil War
Jefferson Davis Inaugurated as Confederate President
By February 1, 1861, seven Deep South states, South Carolina, Mississippi, Florida, Alabama, Georgia, Louisiana, and Texas, had seceded and sent delegates to a convention in Montgomery, Alabama. On February 9 the convention unanimously chose Jefferson Davis, a Mississippi senator and former U.S. Secretary of War, as provisional president of the new Confederate States of America. Davis was inaugurated on February 18, 1861, on the steps of the Alabama State Capitol. He would later stand for a formal election under the permanent Confederate constitution and be inaugurated a second time, for a six-year term, on February 22, 1862, in Richmond, Virginia, which had become the Confederate capital after Virginia seceded in April 1861.
Reputable source · 2 sources - April 12-13, 1861The American Civil War
Confederate Guns Open Fire on Fort Sumter
Major Robert Anderson had moved his small U.S. Army garrison from the indefensible Fort Moultrie to Fort Sumter, an island fortification in Charleston Harbor, in December 1860. Confederate authorities demanded Anderson evacuate; when he refused, stating only that he would eventually be starved out, General P.G.T. Beauregard ordered his batteries to open fire at 4:30 a.m. on April 12, 1861. Confederate guns bombarded the fort for 34 hours. Anderson's garrison, undersupplied and outgunned, returned fire but caused no Confederate casualties, and on April 13 Anderson agreed to surrender. His men were allowed to fire a 100-gun salute to their flag before boarding a ship north; the salute killed one Union soldier, the war's first fatality.
Reputable source · 2 sources - July 21, 1861The American Civil War
First Bull Run Ends Hopes of a Quick War
Pushed by Lincoln to move before Confederate forces could combine, General Irvin McDowell marched roughly 35,000 raw Union volunteers out of Washington on July 16 to attack Beauregard's Confederates at Manassas Junction, Virginia. McDowell's flanking attack on July 21 initially drove the Confederates back, but reinforcements arrived by rail and a Virginia brigade under Thomas J. Jackson held firm on Henry Hill. Confederate General Barnard Bee, rallying his own wavering troops, reportedly pointed to Jackson's line and shouted that Jackson stood "like a stone wall," giving Jackson the nickname that stuck for the rest of the war. A late Confederate counterattack broke the Union line, and McDowell's retreat collapsed into a panicked rout back toward Washington, tangled with the wagons and carriages of civilian spectators who had come out from the capital to watch.
Reputable source · 2 sources - March 9, 1862The American Civil War
Monitor vs. Virginia Makes Wooden Warships Obsolete
The Confederacy had rebuilt the scuttled steam frigate USS Merrimack into the ironclad CSS Virginia, which on March 8, 1862, sank two Union wooden warships at Hampton Roads, Virginia, and threatened to break the Union blockade. The next morning, the Union's own ironclad, USS Monitor, designed by Swedish engineer John Ericsson with a distinctive low, flat deck and a rotating 20-foot gun turret, arrived overnight and engaged the Virginia. The two ships pounded each other with cannon fire for about four hours at close range; their armor deflected nearly every shot, and neither could sink the other. The engagement ended in a tactical draw, with both ships withdrawing.
Reputable source · 2 sources - March-July 1862The American Civil War
The Peninsula Campaign and the Seven Days Battles
General George McClellan landed the Union Army of the Potomac at Fort Monroe, Virginia in March 1862 and marched up the peninsula between the York and James Rivers toward Richmond, the Confederate capital. Confederate forces under John Magruder delayed McClellan for nearly a month at Yorktown, and Joseph Johnston fell back fighting until he was wounded on May 31 at Seven Pines. Robert E. Lee then took command of the Army of Northern Virginia, reorganized it, and, once Stonewall Jackson's troops arrived from a diversionary campaign in the Shenandoah Valley, launched a counteroffensive on June 26 known as the Seven Days Battles. Over a week of fighting that included Gaines' Mill, Savage's Station, and the costly Confederate assault at Malvern Hill on July 1, Lee drove McClellan's larger army away from Richmond and back to the James River.
Reputable source · 2 sources - April 6-7, 1862The American Civil War
Shiloh Reveals the War's True Scale
Confederate General Albert Sidney Johnston, hoping to crush Ulysses S. Grant's army at Pittsburg Landing, Tennessee before Union reinforcements under Don Carlos Buell could arrive, launched a surprise dawn attack on April 6, 1862, near a small log church called Shiloh. The assault initially drove Grant's men back toward the Tennessee River, and Johnston was killed by a bullet that severed an artery behind his knee, bleeding to death before anyone realized the wound was fatal. Union forces, reinforced overnight by Buell's arriving troops, counterattacked on April 7 and pushed the Confederates, now under P.G.T. Beauregard, back to Corinth, Mississippi. Roughly 23,000 men on both sides were killed, wounded, captured, or missing over the two days, out of about 110,000 engaged, a toll that stunned both governments.
Reputable source · 2 sources - September 17, 1862The American Civil War
Antietam: The Bloodiest Day in American History
After his victory in the Seven Days and a second win at Second Bull Run in August, Robert E. Lee crossed the Potomac into Maryland, hoping a Confederate victory on Northern soil might win European recognition for the Confederacy. A Union soldier found a copy of Lee's marching orders wrapped around cigars, giving McClellan advance knowledge of Lee's divided forces, but McClellan moved too cautiously to fully exploit the advantage. The armies collided at Antietam Creek near Sharpsburg, Maryland on September 17, 1862, in twelve hours of fighting across the Cornfield, the Sunken Road, and Burnside's Bridge. By nightfall roughly 23,000 men were killed, wounded, or missing, the bloodiest single day in American history. Lee's battered army withdrew back across the Potomac into Virginia that night.
Reputable source · 2 sources - December 11-15, 1862The American Civil War
Fredericksburg: Burnside's Doomed Assault on the Sunken Road
Ambrose Burnside took command of the Army of the Potomac from McClellan on November 7, 1862, and proposed a rapid march to Fredericksburg, Virginia to cross the Rappahannock River before Lee could concentrate his forces. Bureaucratic delays in Washington held up the pontoon bridges Burnside needed, giving Lee time to fortify the high ground behind the town. When Union troops finally crossed and attacked on December 13, they charged again and again, at least fourteen separate assaults, against a Confederate position behind a stone wall on a sunken road at the base of Marye's Heights. Not a single Union soldier reached the wall. The Army of the Potomac suffered more than 12,500 casualties to Lee's roughly 5,000, one of the most lopsided defeats of the war.
Reputable source · 2 sources - January 1, 1863The Atlantic Slave Trade
Lincoln's Emancipation Proclamation Reframes the Union's War Aims
President Abraham Lincoln signed the Emancipation Proclamation on January 1, 1863, declaring free all enslaved people held within the states then in rebellion against the Union. The order did not apply to enslaved people in the border states that had remained loyal to the Union, nor to Confederate areas already under Union military control, meaning it freed no one directly at the moment it was signed and relied on advancing Union armies to make it real. Pastor John C. Gibbs of Philadelphia's First African Presbyterian Church, reacting to the news, told his congregation that the proclamation meant humanity must now be free. The proclamation formally redefined the purpose of the Civil War for the Union side, adding the end of slavery to the preservation of the union as a war aim, and it opened the way for roughly 200,000 Black soldiers and sailors to serve in Union forces before the war's end.
Primary source · 2 sources - January 1, 1863The American Civil War
Lincoln Issues the Emancipation Proclamation
Lincoln had issued a preliminary proclamation on September 22, 1862, days after Antietam, warning that he would free enslaved people in any state still in rebellion on January 1, 1863. When that date came, he signed the final Emancipation Proclamation, declaring that all persons held as slaves in the designated rebellious states and parts of states "are, and henceforward shall be free." The document names the specific states and parishes it covers and explicitly exempts Union-loyal border states and areas already under Union control, since Lincoln grounded the order in his war powers as commander in chief rather than in a broader claim to end slavery everywhere. It also authorized, for the first time, the enlistment of Black men into the Union army and navy.
Primary source · 2 sources - April 30-May 6, 1863The American Civil War
Chancellorsville and the Death of Stonewall Jackson
Union General Joseph Hooker crossed the Rappahannock and Rapidan Rivers in late April 1863 with a Union army more than twice the size of Lee's, hoping to force Lee out of his defenses at Fredericksburg. Lee, in what many historians call his boldest gamble of the war, split his already outnumbered army, sending Stonewall Jackson on a long flanking march through the woods to hit the exposed Union right flank on May 2. Jackson's surprise attack routed the Union Eleventh Corps, but riding forward after dark to scout a night attack, Jackson was mistaken for Union cavalry and shot by his own North Carolina troops. Jackson's left arm was amputated; he developed pneumonia and died on May 10 at Guinea Station, Virginia. Lee won the battle, forcing Hooker's larger army back across the river, but at the cost of his most trusted subordinate.
Reputable source · 2 sources - July 1-3, 1863The American Civil War
Gettysburg: Pickett's Charge Breaks on Cemetery Ridge
Lee invaded Pennsylvania in June 1863, hoping a victory on Northern soil would strengthen Northern peace sentiment and again attract European recognition. His army collided with the Army of the Potomac, now under George Meade, at Gettysburg on July 1, and three days of fighting followed across Seminary Ridge, Little Round Top, Culp's Hill, and Cemetery Ridge. On July 3, Lee ordered nearly 12,500 Confederate soldiers under George Pickett and others to charge across almost a mile of open ground directly at the Union center on Cemetery Ridge, a decision Lieutenant General James Longstreet argued against beforehand. Union artillery and rifle fire tore the advancing lines apart; only a small number of Confederates briefly reached the Union line before being killed, captured, or driven back. Confederate casualties in the charge alone approached 50 percent, and Lee retreated to Virginia, having lost roughly a third of his army over the three days.
Reputable source · 2 sources - July 4, 1863The American Civil War
Vicksburg Surrenders, Splitting the Confederacy in Two
After an earlier failed attempt in the winter of 1862-63, Ulysses S. Grant renewed his campaign against Vicksburg, Mississippi in the spring of 1863, maneuvering his army south of the city, crossing the Mississippi River, and driving Confederate General John C. Pemberton's forces back into Vicksburg's defenses by mid-May. Grant's army dug fifteen miles of siege trenches around the city and settled in to starve the garrison out rather than risk more costly direct assaults. After holding out more than 40 days on dwindling rations, Pemberton opened surrender talks; Grant initially demanded unconditional surrender but reconsidered and offered to parole the roughly 29,000 Confederate defenders instead. Pemberton, hoping Independence Day might bring softer terms from a sentimental Union public, surrendered on July 4, 1863, one day after Lee's defeat at Gettysburg.
Reputable source · 2 sources - July 18, 1863The American Civil War
The 54th Massachusetts Leads the Assault on Fort Wagner
The 54th Massachusetts Volunteer Infantry, one of the first Black regiments raised in the North after the Emancipation Proclamation authorized Black enlistment, landed on Morris Island, South Carolina in July 1863 as part of a Union campaign to capture Confederate-held Fort Wagner and threaten Charleston. After an earlier assault on July 11 failed, the 54th's colonel, Robert Gould Shaw, asked for the honor of leading the main attack on July 18. Following a day-long naval and artillery bombardment, the 54th charged the fort's defenses at dusk under heavy fire. The regiment suffered catastrophic losses, nearly half its roughly 600 men killed, wounded, or captured, including Shaw, who died atop the fort's parapet and was buried by Confederate troops in a mass grave with his soldiers as an intended insult that the regiment's supporters instead treated as an honor.
Reputable source · 2 sources - September 19, 1863 - November 25, 1863The American Civil War
Chickamauga and the Siege of Chattanooga
Union General William Rosecrans forced Confederate General Braxton Bragg out of Chattanooga, Tennessee in the summer of 1863, but Bragg turned to counterattack at Chickamauga Creek, Georgia on September 19-20. A gap accidentally opened in the Union line let Confederates pour through, routing much of Rosecrans's army; only a defensive stand by General George Thomas, who earned the nickname "the Rock of Chickamauga," prevented total disaster. The battle killed or wounded nearly 35,000 men combined, the war's second-bloodiest after Gettysburg. Bragg then besieged the battered Union army inside Chattanooga, occupying the high ground at Lookout Mountain and Missionary Ridge. Lincoln, viewing Chattanooga's fall as comparable to losing Richmond, sent Grant to take command; over three days in late November, Union troops broke the siege, including an unauthorized charge up Missionary Ridge that swept Bragg's army into Georgia.
Reputable source · 2 sources - November 19, 1863The American Civil War
Lincoln Delivers the Gettysburg Address
The Soldiers' National Cemetery at Gettysburg was dedicated on November 19, 1863, four and a half months after the battle, with the featured address delivered by Edward Everett, a former Massachusetts senator known for hours-long orations. Lincoln was invited only to give a shorter set of "remarks" following Everett's two-hour speech. Lincoln's own address ran roughly two minutes and about 272 words, opening with "Four score and seven years ago" and arguing that the war tested whether a nation "conceived in Liberty, and dedicated to the proposition that all men are created equal" could survive, and closing with the phrase that government "of the people, by the people, for the people, shall not perish from the earth." Five manuscript copies survive in Lincoln's own hand, with minor wording differences between them, since no single verified transcript exists from the moment of delivery.
Primary source · 2 sources - March 10, 1864The American Civil War
Lincoln Makes Grant General-in-Chief of All Union Armies
Frustrated by a string of Union generals in the East who moved too cautiously against Lee, Lincoln backed a bill reviving the rank of lieutenant general, previously held only by George Washington and, by brevet, Winfield Scott. Congress passed the bill, and Lincoln signed it on February 29, 1864, then nominated Ulysses S. Grant the same day. The Senate confirmed Grant on March 2, and Lincoln signed his commission on March 10, 1864, making Grant general-in-chief of all Union armies, replacing Henry Halleck in that role and reporting only to Lincoln as commander in chief. Grant, who had won at Fort Donelson, Shiloh, Vicksburg, and Chattanooga, chose to make his headquarters in the field with the Army of the Potomac rather than in Washington.
Primary source · 2 sources - May-June 1864The American Civil War
The Overland Campaign and the Slaughter at Cold Harbor
As general-in-chief, Grant accompanied the Army of the Potomac south in May 1864, aiming not to capture Richmond directly but to destroy Lee's army through relentless contact, a strategy that produced brutal battles at the Wilderness, Spotsylvania Court House, and North Anna. Unlike previous Union commanders, Grant refused to retreat after each bloody engagement, instead sliding his army around Lee's flank and continuing south. By early June the two armies met at Cold Harbor, Virginia, where Confederate troops had built strong entrenchments. On the morning of June 3, Grant ordered a frontal assault by roughly 50,000 Union soldiers against the fortified Confederate line. The attack collapsed within an hour, costing about 7,000 Union casualties against roughly 1,500 Confederate losses. Grant later called the assault a mistake he regretted, and after further fighting brought Union losses in the campaign past 12,000 more, he abandoned the direct approach to Richmond and moved to besiege Petersburg instead.
Reputable source · 2 sources - June 1864 - April 1865The American Civil War
The Siege of Petersburg Grinds On for Nine Months
After Cold Harbor, Grant abandoned direct attacks on Richmond and instead moved his army south of the James River to seize Petersburg, Virginia, a rail and road hub whose fall would cut off supplies to the Confederate capital just 23 miles away. An initial Union assault in mid-June 1864 failed to take the lightly defended city before Lee's army arrived to reinforce it, and the two armies settled into trench warfare that lasted 292 days, the longest siege in United States military history. Union forces steadily extended their lines to cut Confederate supply routes one by one, including a failed attempt to breach the lines with an underground mine that produced the disastrous Battle of the Crater in July 1864. By late March 1865, Lee's undersupplied and overextended army could no longer hold the lines; a major Union victory at Five Forks on April 1 forced Lee to abandon Petersburg and Richmond on April 2-3.
Reputable source · 2 sources - September 2, 1864The American Civil War
Sherman Captures Atlanta
William Tecumseh Sherman marched from Chattanooga toward Atlanta in May 1864 with roughly 100,000 men, facing a smaller Confederate army first under Joseph Johnston, whose cautious defensive withdrawals frustrated Confederate President Davis, and then under the more aggressive John Bell Hood after Davis replaced Johnston in mid-July. Hood launched costly attacks against Sherman at Peachtree Creek and Atlanta in late July, both of which failed and further thinned his army. Sherman then maneuvered to cut the rail lines supplying Atlanta, and on September 1 Hood evacuated the city rather than be trapped inside it, destroying military supplies as he left. Union troops occupied Atlanta on September 2, and Sherman ordered most of the city's civilians expelled before eventually burning much of what remained militarily useful before his troops departed in November.
Reputable source · 2 sources - November 8, 1864The American Civil War
Lincoln Wins Re-Election
By the summer of 1864, with the Overland Campaign's staggering casualties and no clear end to the war in sight, even Lincoln privately believed he would lose re-election, and Republican leader Thurlow Weed told Secretary of State William Seward that Lincoln's defeat looked like a certainty. The Democratic Party nominated Lincoln's former general, George McClellan, on a platform calling for a negotiated peace, though McClellan himself rejected the platform's peace terms while running on it. Atlanta's capture in September and Philip Sheridan's victories in the Shenandoah Valley reversed the political momentum. On election day, November 8, 1864, Lincoln defeated McClellan decisively, winning 212 of 233 electoral votes and more than 70 percent of the soldier vote, from men choosing between continuing a war that might kill them and a peace candidate.
Reputable source · 2 sources - November 15 - December 21, 1864The American Civil War
Sherman's March to the Sea
After taking Atlanta, Sherman persuaded Grant to let him abandon his supply lines entirely and march his army through the Georgia interior to the Atlantic coast, living off the countryside and destroying the Confederacy's capacity to wage war rather than fighting its shrinking armies directly. Sherman's roughly 60,000 troops left Atlanta on November 15, 1864, marching in a broad front nearly 60 miles wide and advancing about 285 miles over five weeks. Union soldiers tore up railroad tracks, burned cotton gins and mills, and confiscated or destroyed food and livestock, a deliberate campaign meant to prove to Georgia's civilian population that the Confederate government could no longer protect them. The march met little organized military resistance, and on December 21 Union troops occupied Savannah after Confederate forces withdrew; Sherman telegraphed Lincoln offering him the city as a Christmas present.
Primary source · 2 sources - April 9, 1865The American Civil War
Lee Surrenders to Grant at Appomattox Court House
After abandoning Petersburg and Richmond on April 2-3, 1865, Lee's Army of Northern Virginia retreated west, hoping to reach supplies and link up with other Confederate forces, but Union cavalry and infantry cut off every escape route. Cornered near Appomattox Court House, Virginia, Lee agreed to meet Grant on April 9. The two generals met in the parlor of Wilmer McLean's house; Grant, still in a mud-spattered field uniform, offered terms that let Confederate officers and soldiers go home on parole rather than face imprisonment or trial for treason, so long as they did not take up arms again. Officers could keep their sidearms and personal horses, and Grant later extended the same allowance to enlisted men who owned their own horses, since Grant recognized they would need them for the spring planting. The meeting ended with a handshake around 3 p.m., and roughly 28,000 Confederate soldiers were paroled in the following days.
Primary source · 2 sources - April 14-15, 1865The American Civil War
John Wilkes Booth Assassinates Lincoln at Ford's Theatre
On Good Friday, April 14, 1865, actor John Wilkes Booth learned that President Lincoln would attend a performance of the comedy Our American Cousin at Ford's Theatre in Washington that night, a venue Booth knew well from his own acting career there. Booth, a Confederate sympathizer enraged by the South's defeat, slipped into the presidential box during the play and shot Lincoln once in the back of the head with a derringer before leaping to the stage and escaping, despite breaking his leg in the fall. Lincoln, mortally wounded, was carried across the street to the Petersen boarding house, where he died early the next morning, April 15, without regaining consciousness. Booth was tracked down and killed by Union soldiers twelve days later in a Virginia barn; several co-conspirators involved in a broader plot that also targeted Secretary of State Seward were later tried and executed.
Reputable source · 2 sources - December 6, 1865The Atlantic Slave Trade
The Thirteenth Amendment Abolishes Slavery in the United States
Congress passed the Thirteenth Amendment to the US Constitution on January 31, 1865, and the required three-fourths of state legislatures ratified it by December 6, 1865, formally abolishing slavery and involuntary servitude throughout the United States except as punishment for a crime. Lincoln had recognized that the Emancipation Proclamation, an executive war order that applied only to Confederate territory, could not permanently guarantee abolition on its own and pushed for a constitutional amendment that would remove the question from the reach of any future court, president, or peace settlement between North and South. Secretary of State William Seward formally certified the amendment's ratification to the world on December 18, 1865.
Primary source · 2 sources - December 6, 1865The American Civil War
The Thirteenth Amendment Abolishes Slavery
Because the Emancipation Proclamation had rested on Lincoln's wartime powers and applied only to areas in rebellion, it left slavery legally intact in the loyal border states and vulnerable to reversal once the war ended. Congress passed a joint resolution proposing a constitutional amendment to abolish slavery outright on January 31, 1865, and Lincoln signed it the next day, though as a proposed amendment his signature was not constitutionally required. The amendment states that neither slavery nor involuntary servitude, except as punishment for a crime, shall exist anywhere in the United States. It needed ratification by three-fourths of the states; Georgia became the 27th state to ratify on December 6, 1865, meeting that threshold, and Secretary of State William Seward formally proclaimed it part of the Constitution on December 18, 1865.
Primary source · 2 sources - Mid-to-late 1800sHistory of Brazil
Coffee Becomes the Engine of the Empire
As sugar declined, coffee rose to take its place. The Library of Congress country study records that coffee dominated exports in the last half of the nineteenth century, going from 50 percent of exports in 1841-50 to 59.5 percent in 1871-80. The coffee zone lay in the southeast, in the Paraiba Valley and the highlands of Sao Paulo and Minas Gerais, and its plantations were worked at first by enslaved Africans and later by waves of European immigrants. Coffee wealth built railroads, ports, and the fortunes of a new planter elite centered on Sao Paulo.
Reputable source · 2 sources - 1 January 1877The British Empire
Victoria Becomes Empress of India
Prime Minister Benjamin Disraeli pushed the Royal Titles Bill through Parliament despite objections, recorded in Hansard, from opponents including William Gladstone, who argued the title 'Empress' carried unwelcome absolutist connotations. The bill received royal assent on 1 May 1876, formally granting Queen Victoria the title Empress of India, and the new title was proclaimed at the Delhi Durbar on 1 January 1877, a vast ceremonial gathering of Indian princes and British officials. Victoria never visited India herself. By the end of her 63-year reign in 1901 the empire she nominally headed as Empress spanned roughly a quarter of the world's land and population, held together by the Royal Navy and by global trade.
Primary source · 2 sources - 26 February 1885The British Empire
The Berlin Conference and the Scramble for Africa
German Chancellor Otto von Bismarck convened representatives of 14 states in Berlin, beginning discussions on 15 November 1884 and concluding with a General Act on 26 February 1885, to set rules for the accelerating European seizure of African territory. No African kingdom, state, or people had any representative present. The General Act established principles including free navigation of the Congo and Niger rivers and a requirement that new claims to African coastal territory be backed by effective occupation to be internationally recognized. Britain used the framework to expand its claims across East and Southern Africa, pursuing a strategic vision of continuous British territory from Cairo to the Cape, while other powers, chiefly France, Germany, Belgium, and Portugal, staked out their own zones.
Reputable source · 2 sources - May 13, 1888The Atlantic Slave Trade
Brazil Signs the Golden Law and Becomes the Last Nation in the Americas to Abolish Slavery
Brazil received more enslaved Africans than any other destination in the Americas, and slavery remained central to its economy long after most other nations had abolished it. Reform came in stages: the 1871 Law of Free Birth freed children born to enslaved mothers going forward, and the 1885 Sexagenarian Law freed enslaved people once they reached age sixty, neither of which freed anyone already enslaved and of working age. On May 13, 1888, Princess Isabel, serving as regent while her father Emperor Pedro II was in Europe, signed the Lei Aurea, the Golden Law, abolishing slavery outright throughout Brazil. She had to appoint an entirely new cabinet to get the law passed, since the ministers in power when her regency began refused to discuss the policy with a woman. Brazil's abolition, coming a full 55 years after Britain's and 23 years after the United States', made it the last country in the Americas to end slavery. The law freed roughly 700,000 people still enslaved at the time, but included no land redistribution, no compensation to the formerly enslaved, and no structured path to education or citizenship.
Reputable source · 2 sources - 13 May 1888History of Brazil
Brazil Abolishes Slavery With the Golden Law
Brazil ended slavery in stages. The 1871 Law of Free Birth freed children born to enslaved mothers going forward, and the 1885 Sexagenarian Law freed the enslaved once they reached age sixty, but neither freed anyone already enslaved and of working age. On May 13, 1888, Princess Isabel, serving as regent while Emperor Pedro II was in Europe, signed the Lei Aurea, the Golden Law, abolishing slavery outright. The Library of Congress country study frames it bluntly: the Golden Law was not an act of great bravery but a recognition that slavery was no longer viable. Brazil, which had received nearly five million enslaved Africans, was the last country in the Americas to abolish slavery, and the law came with no land, no compensation, and no support for the roughly 700,000 people it freed.
Reputable source · 2 sources - 15 November 1889History of Brazil
A Bloodless Coup Ends the Monarchy and Founds the Republic
Eighteen months after abolition, the empire fell. The Library of Congress country study records that republicans, taking advantage of cabinet crises in 1888 and 1889 and rising frustration among military officers, drew officers led by Field Marshal Deodoro da Fonseca into a conspiracy. What started as an armed demonstration demanding replacement of a cabinet turned within hours into a coup d'etat deposing Emperor Pedro II, in November 1889. The coup met no resistance. Pedro II went into exile in Europe, a provisional government took power with Fonseca as its head, and Brazil became a republic on November 15, 1889.
Reputable source · 2 sources - 10 December 1898The Spanish Empire
The Spanish-American War Ends Spain's Empire in the Americas and the Pacific
By early 1898, tensions between the United States and Spain had been mounting for months over Spain's brutal suppression of the Cuban independence movement. After the U.S. battleship Maine exploded and sank in Havana harbor under mysterious circumstances on 15 February 1898, U.S. military intervention became likely. President William McKinley asked Congress on 11 April 1898 for authorization to intervene, and Congress passed a joint resolution shortly after. The war lasted only months: Spain's Pacific and Caribbean fleets were destroyed, and at Spain's request the French ambassador arranged a cease-fire signed on 12 August 1898. The war officially ended when the United States and Spain signed the Treaty of Paris on 10 December 1898. The treaty guaranteed Cuban independence, forced Spain to cede Guam and Puerto Rico to the United States, and required Spain to sell the Philippines to the United States for twenty million dollars; the U.S. Senate ratified it on 6 February 1899 by a single vote.
Primary source · 2 sources - 1899-1902The British Empire
The Boer War and Britain's Concentration Camps
Britain fought the Second Boer War against the Boer republics of the Transvaal and the Orange Free State, descendants of Dutch settlers in southern Africa, largely to secure control of the region's gold and diamond wealth. When Boer fighters turned to guerrilla tactics after their conventional armies were defeated, the British army responded by burning farms and moving civilians, along with Black African labourers and residents on Boer land, into camps intended to deny the guerrillas supplies and support. Poor planning left the camps overcrowded with inadequate rations and almost no medical or sanitary facilities. Roughly 28,000 Boers, most of them women and children, died in these camps from malnutrition and disease, and around half that number of Black Africans died in separate camps. The Fawcett Commission, sent by the British government to investigate, found that most of the deaths had been preventable.
Reputable source · 2 sources - 1889-1930History of Brazil
The Old Republic Runs on Coffee and Milk
The First Republic, later nicknamed the Republica Velha, was an oligarchy dressed as a democracy. Real power resided in the coffee-growing states of the southeast, and the populous, prosperous states of Minas Gerais and Sao Paulo dominated the system and swapped the presidency between them for many years, an arrangement remembered as cafe com leite, coffee with milk, after Sao Paulo's coffee and Minas Gerais's dairy. Beneath it ran coronelismo, a web of unwritten agreements among local bosses, the colonels, who delivered votes and chose governors. At its height Brazil produced 75 percent of the world's coffee, and falling prices pushed the government to prop up the market and devalue the currency.
Reputable source · 2 sources - 1914-1918The British Empire
The Empire Goes to War, 1914-1918
When Britain declared war on Germany in August 1914, its declaration bound the entire empire, not just the British Isles. Over the following four years more than 3 million soldiers and labourers from across the empire and Commonwealth served alongside the British Army, from a starting force that had been small and designed chiefly to police colonial territories. Roughly 140,000 Indian troops reached the Western Front by the war's end, alongside soldiers from Canada, Australia, New Zealand, and around 15,000 recruits from the West Indies, including 10,000 from Jamaica, who served largely as labourers in ammunition dumps and gun emplacements under frequent enemy fire. Campaigns such as Gallipoli in 1915 inflicted especially heavy losses on Australian and New Zealand troops.
Reputable source · 2 sources - 13 April 1919The British Empire
The Amritsar Massacre
On 13 April 1919, during the Sikh festival of Baisakhi, a large crowd gathered in Jallianwala Bagh, a walled garden in Amritsar with few exits, some to celebrate the festival and others to protest the recent imprisonment of nationalist leaders under the Rowlatt Act. Brigadier-General Reginald Dyer, who had been sent to restore order after unrest that killed several Europeans, arrived with troops. His armoured car could not fit through the narrow passage into the square, so his men entered on foot and, without any warning to disperse, Dyer ordered them to open fire directly into the crowd. Troops kept firing until their ammunition ran low. At least 379 people were killed and more than 1,500 wounded, though Indian estimates put the toll higher. An official inquiry led to Dyer's dismissal from the army, but he remained unrepentant and was celebrated by some in Britain as having preserved order.
Reputable source · 2 sources - 12 March - 6 April 1930The British Empire
Gandhi's Salt March
On 12 March 1930 Mahatma Gandhi set out from Sabarmati Ashram near Ahmedabad with 78 followers on a march of roughly 240 miles to the coastal village of Dandi, to break Britain's legal monopoly on salt production by making salt from seawater himself. Crowds grew along the route as Gandhi spoke and led prayers at stops throughout the 24-day march. On reaching Dandi, he found that police had crushed the salt deposits on the beach into the mud, but on 6 April 1930 he bent down and picked up a lump of natural salt anyway, a deliberate act of lawbreaking. The gesture triggered mass civil disobedience against the salt laws across India, and more than 60,000 people were jailed in the campaign that followed, though the British government made no immediate major concessions.
Primary source · 2 sources The Revolution of 1930 Brings Getulio Vargas to Power
The Great Depression gutted coffee prices, and the 1930 presidential election, seen by opponents as rigged for Sao Paulo's candidate, gave the losing coalition a cause. A revolt swept the country, and Getulio Dorneles Vargas, governor of Rio Grande do Sul, took national power. Brown University's Brazil: Five Centuries of Change records that the disintegration of the old political order gave rise to the triumph of Getulio Vargas in the Revolution of 1930, which instituted a swing towards centralization of power in the federal government. The Library of Congress country study notes that Vargas then ruled as dictator from 1930 to 1934 in a provisional government before a brief constitutional period.
Reputable source · 2 sourcesVargas Declares the Estado Novo Dictatorship
In November 1937, weeks before a scheduled election he was barred from contesting, Vargas staged a self-coup, issued a new authoritarian constitution, and declared the Estado Novo, the New State. Brown University's Brazil: Five Centuries of Change records that Vargas created a dictatorial regime with his establishment of the Estado Novo. The Library of Congress country study describes what changed: under the Estado Novo, state autonomy ended, appointed federal officials replaced governors, and patronage flowed from the president downward, while all political parties were dissolved until 1944, limiting any organized opposition. The regime censored the press, jailed opponents, and built a corporatist state that also expanded labor rights and industry.
Reputable source · 2 sourcesThe Bengal Famine of 1943
A famine struck Bengal and Orissa in 1943, during the Second World War, killing an estimated three million people from starvation and diseases worsened by malnutrition and population displacement. Unlike most famines, this one was not primarily caused by a shortfall in food production: rice supplies were only marginally below the five-year average and were actually higher than in 1941, a year with no famine. Wartime inflation drove food grain prices up by more than 300 percent between 1939 and 1943 while agricultural wages rose only 30 percent, pricing labourers out of the market for rice they had previously been able to afford. British authorities in London, anticipating a Japanese invasion after the fall of Burma, restricted the movement of boats and grain within Bengal under a scorched-earth policy and limited shipping allocated for relief, citing wartime shortages, even as food continued to be exported to other parts of the war effort.
Peer-reviewed · 2 sources- 1944-1945History of Brazil
Brazil Sends the Only Latin American Ground Troops to Europe
Vargas, courted by both the Axis and the Allies, joined the Allied side and sent the Brazilian Expeditionary Force, the Forca Expedicionaria Brasileira, to fight in Italy. History.com records that Brazil was the only South American nation and one of just two Latin American countries to take up arms, deploying a 25,000-man force nicknamed the Smoking Snakes. The Brazilian government's own account puts the force at 25,900 men and credits it with a legendary victory at the Battle of Monte Castello in early 1945. The BEF landed at Naples in mid-1944, first saw hostile fire in September 1944, and fought through the war's end in May 1945.
Reputable source · 2 sources - 15 August 1947The British Empire
Indian Independence and Partition
Weakened by two world wars and facing an independence movement that neither repression nor reform had contained, Britain moved its planned withdrawal from India forward by a year. On 3 June 1947 Viceroy Lord Mountbatten announced with Congress leader Jawaharlal Nehru and Muslim League leader Muhammad Ali Jinnah that Britain would transfer power to two new dominions, India and Pakistan. Independence was declared on 14 and 15 August 1947, but the actual border, splitting the provinces of Punjab and Bengal along a roughly even division of Hindu, Muslim, and Sikh populations, was not announced until two days later, on 17 August. In the following months more than 15 million people migrated across the new borders in one of the largest forced migrations in history, accompanied by communal violence in which at least a million people died.
Reputable source · 2 sources - 1952-1960The British Empire
The Mau Mau Uprising and the Kenya Emergency
From 1952 the Mau Mau, drawn largely from the Kikuyu people of Kenya, waged an armed rebellion against British colonial rule and the seizure of land by white settlers. Britain declared a state of emergency and, through operations such as Operation Anvil, systematically screened and detained tens of thousands of Kikuyu, Embu, and Meru people, eventually passing at least 100,000 and perhaps as many as 150,000 people through a network of dozens of detention camps. Detainees were funnelled through the camps, sometimes called 'the pipeline,' where torture, forced labour, and isolation were routine. Those judged 'irreconcilable' were sent to remote camps such as Hola, where eleven detainees were beaten to death in March 1959, a killing that helped bring the emergency to an end. Decades later the British government formally apologized and paid compensation to elderly survivors of the camps.
Reputable source · 2 sources - 29 October 1956The British Empire
The Suez Crisis
Egyptian President Gamal Abdel Nasser nationalized the Suez Canal Company on 26 July 1956. Prime Minister Anthony Eden, determined to reverse the move, secretly agreed with France and Israel in October that Israel would attack across the Sinai Peninsula, giving Britain and France pretext to intervene as supposedly neutral peacekeepers protecting the canal. Israeli forces attacked on 29 October 1956, advancing to within ten miles of the canal, and British and French troops landed on 5 to 6 November. The Eisenhower administration, wary of appearing to endorse European colonialism while it was condemning the Soviet invasion of Hungary that same week, applied severe financial and diplomatic pressure, forcing Britain and France to halt the operation and withdraw by December. Eden's health collapsed under the strain and he resigned soon after returning from a recuperative trip to Jamaica.
Reputable source · 2 sources - 3 February 1960The British Empire
The Wind of Change and African Decolonization
Ghana became Britain's first African colony to achieve independence in 1957. On 3 February 1960, addressing the Parliament of South Africa in Cape Town, Prime Minister Harold Macmillan declared: 'The wind of change is blowing through this continent and, whether we like it or not, this growth of national consciousness is a political fact. We must all accept it as a fact, and our national policies must take account of it.' The speech, delivered in a country then governed under apartheid, signalled that Macmillan's Conservative government would no longer try to hold back independence movements across Britain's remaining African territories. Independence followed rapidly: Nigeria in 1960, Tanganyika in 1961, Uganda in 1962, and Kenya in 1963 among more than twenty former colonies across Africa, Asia, and the Caribbean that became sovereign states over the following decade.
Primary source · 2 sources - 21 April 1960History of Brazil
Kubitschek Builds Brasilia From Empty Savanna
After Vargas fell in 1945, Brazil returned to elected government. Juscelino Kubitschek, elected in 1955 on the slogan Fifty Years' Progress in Five, made his signature project the construction of a wholly new capital in the empty central highlands. The Library of Congress country study records that he yanked Brazil away from its fascination with the coast by moving the capital to Brasilia in a new Federal District carved out of then-distant Goias. Planned by Lucio Costa and designed by architect Oscar Niemeyer, the city was built in about four years and inaugurated on April 21, 1960, replacing Rio de Janeiro as the seat of government.
Reputable source · 2 sources - 1 April 1964History of Brazil
The Military Seizes Power in 1964
Brazil's Second Republic died in a coup. Amid economic crisis, high inflation, and elite fears of communism, President Joao Goulart, a populist and former labor minister under Vargas, lost the confidence of the military and the coffee and business classes. In late March 1964 the armed forces moved. The Library of Congress country study records that the military moved to secure the country and Goulart fled to Uruguay. The generals took power on April 1, 1964, and would hold it, the country study notes, from 1964 until March 1985, not by original design but because of political struggles within the new regime.
General source · 2 sources - 13 December 1968History of Brazil
AI-5 Turns the Dictatorship Into Its Harshest Phase
The dictatorship hardened. On December 13, 1968, hard-liners in the military pressured President Costa e Silva into promulgating the Fifth Institutional Act, known as AI-5. The Library of Congress country study describes its effect: the act gave the president dictatorial powers, dissolved Congress and state legislatures, suspended the constitution, and imposed censorship. What followed were the years of heaviest repression. The country study records that the repressive apparatus expanded into various agencies, which spied on political opponents and engaged in dirty tricks, torture, and disappearings, alongside an antiguerrilla campaign against armed opposition groups.
Reputable source · 2 sources - 15 January 1985History of Brazil
Brazil Returns to Civilian Rule
The dictatorship ended gradually through a controlled opening the generals called abertura. On January 15, 1985, the Library of Congress country study records, the electoral college elected Tancredo Neves of Minas Gerais, a civilian opposition leader, as president, ending 21 years of military rule. Neves collapsed the night before his inauguration and died weeks later, and the presidency passed to Vice President Jose Sarney. A new democratic constitution followed in 1988, restoring direct elections, civil liberties, and the political rights the dictatorship had suspended.
Reputable source · 2 sources - 1 July 1994History of Brazil
The Real Plan Defeats Hyperinflation
Democratic Brazil's first great achievement was killing inflation. Prices had spiraled for years, reaching 757 percent in just the first half of 1994. The Plano Real, launched under President Itamar Franco with Fernando Henrique Cardoso as finance minister, used a virtual accounting currency, the Unidade Real de Valor, to reset expectations before introducing a new money. The Brazilian government's news service records that on July 1, 1994, a new currency was brought into force in Brazil: the real, putting an end to the hyperinflation, after which inflation plummeted to 18.6 percent in the following half-year. Cardoso rode the plan's success to the presidency in 1995 and served two terms.
General source · 2 sources - 1 July 1997The British Empire
The Handover of Hong Kong
Britain and China signed the Sino-British Joint Declaration on 19 December 1984, under which Britain agreed to transfer sovereignty over Hong Kong, including Hong Kong Island ceded in 1842, Kowloon ceded in 1860, and the New Territories held on a 99-year lease since 1898, to the People's Republic of China. The declaration established the 'one country, two systems' principle, under which Hong Kong's capitalist economic system and civil freedoms would remain unchanged for fifty years after the handover, distinct from mainland China's socialist system. At midnight on 1 July 1997 Britain formally transferred sovereignty, ending 156 years of colonial administration, and Hong Kong became a Special Administrative Region of China under the leadership of its first Chief Executive, Tung Chee-hwa.
Reputable source · 2 sources - 10 December 2014History of Brazil
The National Truth Commission Documents the Dictatorship's Crimes
Decades after the fact, Brazil counted its dead. The National Truth Commission, reporting on December 10, 2014, raised the confirmed toll of the dictatorship years. Human Rights Watch records that the commission increased the count of people dead or disappeared during the Dirty War years to 434, whereas the official number previously stood at 362, a total made up of 191 people killed, 210 disappeared, and 33 who were disappeared but whose bodies were later recovered. The report identified hundreds of individuals responsible for human rights violations, close to 200 of them still alive, and found the abuses were widespread and systematic actions carried out as government policy. These are confirmed cases; historians and victims' groups regard the real toll, including Indigenous deaths and unregistered victims, as higher.
General source · 2 sources - 2015-2017 CE (excavation of a 15th-16th century structure)The Aztec Empire
Archaeologists Uncover the Huey Tzompantli Skull Tower
In 2015, researchers from the Urban Archaeology Program of Mexico's Instituto Nacional de Antropologia e Historia, digging beneath the Templo Mayor site in Mexico City, uncovered a section of the Huey Tzompantli, the temple's main trophy structure for displaying the skulls of sacrificial victims, initially finding 484 skulls. Smithsonian Magazine reported that continued excavation eventually brought the total count to roughly 650 skulls, built up in at least three distinct construction phases dated to between about 1486 and 1502, the reign of Ahuitzotl. Analysis of the remains found that around a quarter belonged to women and children, contradicting earlier assumptions that the tower held only defeated male warriors. The skulls, bonded together with lime, had first been displayed on smaller racks elsewhere in the city before being incorporated into the larger tower structure, and Spanish forces and their indigenous allies partially destroyed the tower when they occupied Tenochtitlan in the 1520s.
Reputable source · 2 sources