| A | B |
| Augustus (Octavian Caesar) | First Roman emperor, won the civil war following Julius Caesar's assassination and went on to unify the empire and establish the Pax Romana. |
| Aqueduct | Raised tunnels used to carry water from the mountains to the cities. (Irrigation systems in Rome.) This is an example of Roman Technology. |
| Byzantine Empire | The eastern empire of the Roman Empire. (Rome splits into two empires to make it easier to control and rule.) The capital was Constantinople. It was run by the Greeks. |
| Colosseum | A large stadium in ancient Rome where athletic events and gladiator matches took place. |
| Constantine | The first Christian emperor of Rome. He declares Rome a Christian empire and helps spreads Christianity throughout empire. |
| Dictator | A ruler who has total power. |
| Forum | The city market and meeting place in the center of ancient Rome. |
| Julius Caesar | A Roman general who overthrew the Roman Republic. He declared himself dictator of Rome but was killed by fellow Romans. |
| Pax Romana | A period of peace for the Roman Empire that began with the rule of Augustus and lasted for about 200 years. The Roman Golden Age. |
| Roman Empire | An empire that succeeded the Roman Republic. 27 BCE – 476 CE. It was the most extensive political and social structure in western civilization |