Byzantine Empire
The Byzantine Empire, also referred to as the Eastern Roman Empire, was the continuation of the Roman Empire primarily in its eastern provinces that survived into the Late Antiquity and the Middle Ages. The capital of the empire was Constantinople. It survived the fall of the Western Roman Empire in the 5th century AD and continued to exist until the fall of Constantinople to the Ottoman Empire in 1453. During most of its existence, the empire remained the most powerful economic, cultural, and military force in the Mediterranean world. Its citizens continued to refer to their empire as the Roman Empire and to themselves as Romans, a term which Greeks continued to use for themselves into Ottoman times. Modern historians distinguish the Byzantine Empire from the earlier Roman Empire due to the imperial seat moving from Rome to Byzantium, the Empire's integration of Christianity , and the predominance of Greek instead of Latin.