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c. 122 CEReputable source · 2 sourcesWell documented

Hadrian's Wall Is Begun

On the timeline · around c. 122 CE · Hadrian's Wall Is Begun50 CE75 CE100 CE125 CE150 CE175 CE200 CE

What happened

Around 122 CE, following the emperor Hadrian's visit to Britain, the Romans began building a stone wall running some 73 miles (120 km) coast to coast across northern Britain to mark and guard the frontier.

Why it matters

Hadrian's Wall embodied a new imperial strategy of holding fixed frontiers rather than expanding endlessly, and is the best-known surviving Roman frontier work.

Sources

Hadrian's Wall Is Begun — Ancient Rome · SourcedStory