What were the Crusades? A. efforts by the pope to get everyone to contribute money to the church

B. the crosses that decorated the breastplates of certain knights

C. wars between Christians and Muslims over control of the Holy Land

D. battles at sea involving a special type of ship sailing from Constantinople

c. wars between Christians and Muslims over control of the Holy Land.

Explanation:

the Crusades were a series of religious wars between Christians and Muslims started primarily to secure control of holy sites considered sacred by both groups.

what are the choices btw if it was me id say the lack of money to continue with education