Edit summary: Created page with "thumb, which began construction in 122.]] {{Decadebox|12}} The '''120s''' was a decade that ran from January 1, AD 120, to December 31, AD 129. During this decade, the Roman Empire was ruled by Emperor Hadrian (r. 117–138). In the prior decade, he had succeeded Emperor Trajan, who had expanded the empire to its greatest extent. Hadrian, in contrast, adopted a more defensive forei..."

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