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2 Apr 1453
The armies of Sultan Mehmed II arrived at Constantinople's outer walls and prepared to lay siege to the city.
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12 Apr 1204
Crusaders from the Fourth Crusade broke through Constantinople's walls and entered the great city.
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18 Jun 0860
The Rus' Khaganate started the Siege of Constantinople.
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13 Jan 0532
The most destructive riot in Constantinople's history, the Nika Riots, began during a chariot race.