Pax Romana

Pax Romana, Latin for "the Roman peace" (sometimes Pax Augusta), was the long period of relative peace and minimal expansion by military force experienced by the Roman Empire between 27 BC and 180 AD. It was Augustus Caesar who led Rome into the moderation of Pax Romana and his successors, for the most part, imitated his policy.
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Noun
1. the Roman peace; the long period of peace enforced on states in the Roman Empire
(hypernym) peace