<Li> Byzantine--Genoese War </Li> <Li> Campaigns of Constantine XI </Li> <P> The Sack of Constantinople or Siege of Constantinople occurred in 1204 and marked the culmination of the Fourth Crusade . Mutinous Crusader armies captured, looted, and destroyed parts of Constantinople, the capital of the Byzantine Empire . After the capture, the Latin Empire was established and Baldwin of Flanders was crowned Emperor Baldwin I of Constantinople in the Hagia Sophia . </P> <P> After the city's sacking, most of the Byzantine Empire's territories were divided up among the Crusaders . Byzantine aristocrats also established a number of small independent splinter states, one of them being the Empire of Nicaea, which would eventually recapture Constantinople in 1261 and proclaim the reinstatement of the Empire . However, the restored Empire never managed to reclaim its former territorial or economic strength, and eventually fell to the rising Ottoman Sultanate in the 1453 Siege of Constantinople . </P>

Who controlled the city of constantinople at the end of the crusades