Vespasian, full name Titus Flavius Vespasianus (9–79 A.D.), a Roman emperor. He was proclaimed emperor by the army in 69, ending a period of civil war that followed Nero's death in 68. Vespasian restored peace and prosperity, reformed the tax system, and governed efficiently. He built many roads and other public works, including the Colosseum and a new forum in Rome. Before becoming emperor, Vespasian held many military commands, including one in Judea where he was seat in 67 to put down a Jewish revolt.