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Tides of History · May 6, 2025 · 44m

Roman Citizenship: The Most Radical Idea in the Ancient World

Rome was unique in the ancient world: it extended citizenship to conquered peoples. Wyman examines how this radical policy of inclusion — from the Social War to the Constitutio Antoniniana — built an empire that was more than just a military occupation.

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Canon

Wyman argues that Rome's policy of extending citizenship — turning former enemies into stakeholders — created an expanding base of loyal soldiers, taxpayers, and administrators that no rival empire could match.

Highlights

The Constitutio Antoniniana of 212 CE made every free person in the empire a citizen — the most radical expansion of legal equality before the French Revolution
Emperor Caracalla's edict extending citizenship to all free inhabitants of the empire was the most expansive grant of legal rights in ancient history, covering perhaps 30 million people overnight.
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