Rome By _luciiaa.8_ 753 BCE Rome was founded 509 BCE Rome become republic 218 BCE Hannibal invades Italy 45 BCE Julius Caesar become first dictator 44 BCE Julius Caesar was killed 27 BCE Rome becomes Empire 27 Caesar Augustus become first Roman emperor 80 Colosseum is built 121 The Hadrian was built 306 Constantine become emperor 395 Rome splits in two empires 410 The Visigoths sack Rome 476 End of western Roman Empire and fall of Ancient Rome