What were Augustus Caesar's achieve??? Augustus's greatest accomplishment is that he brought peace to a Roman state that had been war-torn for decades. However, that peace was only within the boundaries of Rome.
Who came after Augustus??? Augustus, the first Roman emperor (ruled 27BC-AD14), was born Octavius before being adopted later by his great-uncle Julius Caesar. Ruling as Octavius Caesar in a Triumvirate with Mark Anthony andLepidus after Caesar's assassination in 44BC, he eventually became supremely powerful.