Gaius Julius Caesar[a] (/ˈsiːzər/; Latin pronunciation: [ˈɡaː. i. ʊs ˈjuː. li. ʊs ˈkae̯. sar]; 12 or 13 July 100 BC – 15 March 44 BC), known by his nomen and cognomen Julius Caesar, was a Roman politician and military general 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 is also known as an author of Latin prose.