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.
History of the Ottoman Empire
The Ottoman Empire was founded by Osman I. As sultan Mehmed II conquered Constantinople (today named Istanbul) in 1453, the state grew into a mighty empire. The Empire reached its apex under Suleiman the Magnificent in the 16th century when it stretched from the Persian Gulf in the east to Hungary in the northwest; and from Egypt in the south to the Caucasus in the north. The empire came to an end in the aftermath of its defeat by the Allies in World War I. The empire was abolished by the Government of the Turkish Grand National Assembly in Ankara in November 1922 following the Turkish War of Independence (1919–23).