The Fall of Constantinople, also known as the Conquest of Constantinople, was the capture of Constantinople, the capital city of the Byzantine Empire, by the Ottoman Empire. The city was captured on 29 May 1453 as part of the culmination of a 53-day siege which had begun on 6 April. The attacking Ottoman Army, which significantly outnumbered Constantinople's defenders, was commanded by the 21-year-old Sultan Mehmed II (later nicknamed "the Conqueror"), while the Byzantine army was led by Emperor Constantine XI Palaiologos.

Key figuresWilliam the ConquerorMehmed IV