The Byzantine Empire existed from 330 to 1453. It is often called the Eastern Roman Empire or simply Byzantium. The Byzantine capital was founded at Constantinople by Constantine I (r. 306-337). The Byzantine Empire varied in size over the centuries, at one time or another, possessing territories located in Italy, Greece, the Balkans, Levant, Asia Minor, and North Africa.
This is a companion discussion topic for the original content at https://www.worldhistory.org/Byzantine_Empire/.