Timeline of Ancient Rome By Dkdkfrlflffcfggh 753 BCE Foundation of Rome Period: 753 BCE to 509 BCE MONARCHY 509 BCE Rome becomes a Republic Period: 509 BCE to 27 BCE REPUBLIC 45 BCE Julius Caesar dictator of Rome 44 BCE Julius Caesar was murdered 27 BCE Roman Republic ends and the first Roman emperor, Augustus Comes to power Period: 27 BCE to 476 EMPIRE 43 Romans invade Britain under Emperor Claudius 401 The end of Roman rule in Britain 476 The end of Western Roman empire