Deleted a lot of useless trivia, and added some new info. Also changed every mention of the term "Byzantine" or "Greek" to "Roman" where it made sense to do so.
[[Image:Siege of Constantinople.jpg|right|frame|The 1453 Siege of Constantinople (painted 1499)]]
The '''Fall of Constantinople''' was the conquest of that
Greek city by the Ottoman Empire under the command of Sultan Mehmet II, on Tuesday, [[May 29]], 1453. This marked not only the final destruction of the [[Eastern Roman Empire|Eastern Roman ("Byzantine") Empire]], and the death of [[Constantine XI]] , the last Roman Emperor, but also the strategic conquest crucial for Ottoman hegemony over the Eastern Mediterranean and Balkans.
==State of the
Eastern Roman Empire==In the approximately 1000 years of the existence of the Empire, Constantinople had been besieged many times ; it had been captured only once, during the [[Fourth Crusade]] in 1204. The crusaders, however, had not originally set out to conquer the Empire, and the Byzantines re-established themselves in the city in 1261. In the following two centuries, the much-weakened empire was gradually taken piece by piece by a new threat, the Ottoman Empire. In 1453 the "empire" consisted of little more than the city of Constantinople itself and a portion of the Peloponnese (centered on the fortress of Mystras) ; the Empire of Trebizond, a completely independent successor state formed in the aftermath of the Fourth Crusade also survived on the coast of the Black Sea.
Mehmet, whose great-grandfather Bayezid I had previously built a fortress on the Asian side of the Bosphorus called ''Anadolu Hisarı'', now built a second castle outside the walls of Constantinople on the European side
, which would increase Turkish influence on the straits . An especially relevant aspect of this fortress is its ability to prevent help from Genoese colonies on the Black Sea coast reaching the city . This castle was called ''Rumeli Hisarı''; ''Rumeli'' and ''Anadolu'' being the names of European and Asian portions of the Ottoman Empire, respectively. The new fortress is also known as ''Boğazkesen'' which has a dual meaning in Turkish; strait-blocker or throat-cutter, emphasizing its strategic position. Meanwhile, Constantine XI tried to buy him off with gifts. The closing of the small mosques within Constantinople by Constantine XI and the pressures on Greek Muslims to [[convert]] back to Christianity formed the pretext for Mehmet to declare war.
Constantine appealed to Western Europe for help, but [[Nicholas V of Rome|Pope Nicholas V]] was unwilling to support the
Empire. Ever since the [[Great Schism|mutual excommunication]] of the [[Orthodox Church|Orthodox]] and [[Roman Catholic Church|Roman Catholic]] churches in 1054, the Roman Catholic West had been trying to re-integrate the East; the West now used this as a negotiating tactic, promising to send help if the Byzantines brought their church back into [[full communion|communion]] with Rome. Attempts had been made to do this after the [[Council of Florence]] and the Council of Basel, but the Orthodox population refused to support it. Pope Nicholas and many other western leaders made the decision not to support the Empire, although some troops did arrive from the city states of northern Italy.
Byzantine army itself totalled about 7000 men, 2000 of whom were foreign mercenaries. The city also had fourteen miles of walls , probably the strongest set of fortified walls in existence at the time. The Ottomans, on the other hand, had a much larger force, numbering around 100,000, including 20,000 Janissaries. Mehmet also built a fleet to besiege the city from the sea.
The Ottomans employed a Hungarian engineer
called Urban who was a specialist in the construction of cannons, which were still relatively new weapons. He built an enormous cannon, nearly twenty-seven feet (more than 8 m) in length and 2.5 feet (about 75 cm) in diameter, which could fire a 1200 lb (544 kg) ball as far as one mile. It was dubbed "the Basilic". Although the Byzantines also had cannons, they were much smaller and their recoil tended to damage their own walls. Urban's cannon had several drawbacks , however. It could hardly hit anything, not even as large as Constantinople; it took three hours to reload ; the cannon balls were in very short supply ; and the cannon collapsed under its own recoil after six weeks.
==Siege and final assault of the city==
Mehmet planned to attack the Theodosian Walls, the intricate series of walls and ditches protecting Constantinople from an attack from the west, the only part of the city not surrounded by water. His army encamped outside the city on [[Bright Monday]], [[April 2]], 1453. For weeks Mehmet's massive cannon fired on the walls, but it was unable to sufficiently penetrate them, and due to
its extremely slow rate of reloading the Byzantines were able to repair most of the damage after each shot. Meanwhile, Mehmet's fleet could not enter the Golden Horn due to the large chain the Byzantines had laid across the entrance. To circumvent this he built a road of greased logs across Galata on the north side of the Golden Horn, and rolled his ships across. This succeeded in stopping the flow of supplies from Genoan ships and demoralizing the Byzantine defenders, but did not help in breaching the land walls. Mehmet offered to raise the siege for an astronomical tribute that he knew the city would be unable to pay. When this was declined, Mehmet planned to overpower the walls by sheer force, knowing that the Byzantine defenders would be worn out before he ran out of troops.
Unfortunately for the
Greeks, the Kerkoporta gate in the Blachernae section had been left unlocked, and the Ottomans soon discovered this mistake (there was no question of bribery or deceit by the Ottomans ; the gate had simply been overlooked, probably because rubble from a cannon attack had obscured or blocked the door). The Ottomans rushed in. [[Constantine XI ]] himself led the last defense of the city, dying in the ensuing battle in the streets.
In Mehmet's view, he was the successor to the Roman Emperor
, but he was nicknamed "the Conqueror", and Constantinople became the new capital of the Ottoman Empire. [[Hagia Sophia (Constantinople)|Hagia Sophia]] was converted into a mosque, although the [[Church of Constantinople]] remained intact, and [[ Gennadius II (Scholarius) of Constantinople|Gennadius Scholarius]] was appointed [[Patriarch]] of Constantinople. The Peloponnesian fortress of Mystras held out until 1460, and the autonomous Byzantine state in Trebizond did not fall until 1461.
Many Greeks fled the city and found refuge in Italy, bringing with them many ancient Greek writings that had been lost in the West
. These helped contribute to the European Renaissance. Those Greeks who stayed behind were mostly confined to the [[Phanar]] and Galata districts. The Phanariots, as they were called, often provided capable advisors to the Ottoman sultans, but were just as often seen as traitors by other Greeks. Scholars consider the Fall of Constantinople as a key event ending the Middle Ages and starting the Renaissance because of the end of the old religious order in Europe and the use of cannon and gunpowder. Down to the present day, many Greeks have considered Tuesday (the day of the week that Constantinople fell) to be the unluckiest day of the week.