In what way did the Christian Crusades contribute to the decline of the Byzantine Empire?
A: Financing the Crusades proved to be an impossible burden for the Byzantine treasury.
B: Latin Crusaders turned against the Byzantines, leading to the loss of much territory.
C: The Byzantine army lost many of its leading knights when they left to fight in the Crusades.
D: Nations that were not joining the Crusades attacked Byzantium when it was occupied in the east