Which event would appear first on a timeline? Study the list of events in the history of Rome. 80 CE – The Colosseum was built. 395 CE – Rome split into two empires. 509 BCE – Rome became a republic. 44 BCE – Caesar was assassinated. 753 BCE – Rome was founded. 64 CE – Much of Rome burned. A.Rome was founded. B.Much of Rome burned. C.The Colosseum was built. D.Rome split into two empires.