What effect did the crusades have on the byzantine empire

Transcript of Effect of the Crusades on the Byzantine Empire. The Byzantineemperor called for Western help to fight the Seljuks, whose attacks blocked the pilgrimage routes to Jerusalem. 1453 The Ottoman forces surrounded the city of Constantinople. They brought cannons to attack the citys walls
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In general terms, the Crusades affected the Byzantine empire negatively. for one thing, the marches of the crusader armies through Byzantine territory typically led to destruction and disorder if but rarely on a grade scale.