| A | B |
| Etruscans | One of the first groups to inhabit the Italian peninsula, they strongly influenced Roman civilization through their architecture, system of writing, engineering, and metal working. |
| Patrician | in ancient Rome, a member of the wealthy, privileged upper class. |
| plebeian | in ancient Rome, one of the common farmer, artisans, and merchants who made up most of the population. |
| Republic | a form of government in which power is in the hands of representatives and leaders are elected by the people. |
| Tribune | in ancient Rome, an official elected by the plebeians to protect their rights. |
| Consul | in the Roman republic, one of the two powerful officials elected each year to command the army and direct the government. |
| Legion | military unit in ancient Rome army, made up of about 5000 foot soldiers and a group of soldiers on horseback. |
| Pax Romana | a period of peace and prosperity throughout the Roman Empire, lasting from 27 BC to AD 180. |
| Inflationn | a decline in value of money accompanied by a rise in the prices of goods and services. |
| Docletian | Roman emperor (284–305 ce), who restored efficient government to the empire that laid the foundation of the Byzantine Empire |
| Constantine | First Roman emperor to legalize Christianity. |
| Apostle | one of the followers of Jesus who preached and spread his teachings |
| Heresy | religious beliefs or opinions that differ from the official teachings of a Christian church. |
| Constantinople | Built in the seventh century BC, the ancient city of Byzantium proved to be a valuable city for both Greeks and Romans. |