Constantinople
Constantinople (; ) was the capital city of the Roman/Byzantine Empire (330–1204 and 1261–1453), and also of the brief Crusader state known as the Latin Empire (1204–1261), until finally falling to the Ottoman Empire (1453–1923). It was reinaugurated in 324 from ancient Byzantium as the new capital of the Roman Empire by Emperor Constantine the Great, after whom it was named, and dedicated on 11 May 330. The city was located in what is now the European side and the core of modern Istanbul.
Classical Anatolia
Roman control of Anatolia was strengthened by a 'hands off' approach by Rome, allowing local control to govern effectively and providing military protection. In the early 4th century, Constantine the Great established a new administrative centre at Constantinople, and by the end of the 4th century a new eastern empire was established with Constantinople as its capital, referred to by historians as the Byzantine Empire from the original name, Byzantium.