Gaius Julius Caesar[a] (/ˈsiːzər/; Latin pronunciation: [ˈɡaː. i. ʊs ˈjuː. li. ʊs ˈkae̯. sar]; 12 or 13 July 100 BC[b] – 15 March 44 BC),[c] known by his nomen and cognomen Julius Caesar, was a populist Roman dictator, politician, military general, and historian who played a critical role in the events that led to the demise of the Roman Republic and the rise of the Roman Empire. He also wrote Latin prose.