Answer:
Essentially the Orthodox Church shares much with the other Christian Churches in the belief that God revealed himself in Jesus Christ, and a belief in the incarnation of Christ, his crucifixion and resurrection. The Orthodox Church differs substantially in the way of life and worship.
Explanation:
Weakened, and Constantinople was never able to regien its power before the burning.
The Crusades were fought for the control of several cities and ports, but the main target was Jerusalem, since this was the holy land that the Church wanted to take back.