The Indus Cities Rise, and Their Script Stays Silent
Brick cities with covered drains and standard weights, and a writing system no one can read
Quick facts
- Peak urban phase
- c. 2600-1900 BCE
- Territory
- Larger than Egypt or Mesopotamia
- Major cities
- Mohenjo-daro and Harappa
- Script status
- Undeciphered
What happened
Along the Indus River and its tributaries, in what is now Pakistan and northwestern India, a civilization built the first cities of the subcontinent. World History Encyclopedia calls it among the greatest of the ancient world, covering more territory than either Egypt or Mesopotamia. The cities were laid out on a grid aligned to the cardinal points and built of mud bricks that were often kiln-fired. The Library of Congress country study records that the remnants of the two major cities, Mohenjo-daro and Harappa, reveal advanced engineering feats of uniform urban planning and carefully executed layout, water supply, and drainage. Thousands of seals carry a script that has never been deciphered, so the civilization's own name for itself, its language, and its rulers remain unknown. The cities faded between about 1900 and 1700 BCE.
Why it matters
The Indus Valley Civilization is the deep foundation of subcontinental history, and its urban planning was more systematic than anything Europe would manage for millennia. The undeciphered script means one of the world's earliest literate societies still cannot speak to us directly, leaving its politics and religion in the realm of inference rather than record.
How we know
The cities survive as excavated brick foundations, drains, wells, weights, and inscribed seals across sites like Harappa and Mohenjo-daro, studied since the 1920s, but the writing has eluded scholarly attempts at deciphering it.
Sources
- World History Encyclopedia. Ancient India · Reputable sourceworldhistory.org · The domain "worldhistory.org" is on our Reputable source registry. · Link is live and its text matches the event's key terms (Jul 2026)
- Library of Congress, Federal Research Division. India: A Country Study (Harappan Culture) · Primary source (author-declared)countrystudies.us · Cited as a "primary" source (no stronger domain match). · Link is live and its text matches the event's key terms (Jul 2026)
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Related timelines
- Ancient India → · The Ancient India timeline covers the Indus cities in full, including the Great Bath, the standard weights, the city-wide drainage, and the debate over why the cities declined.