How did the crusades contribute to the end of europe's medieval period?
a. the crusades made many europeans question the authority of the protestant church.
b. the crusades reduced europe's workforce, making it harder for lords to find laborers.
c. the crusades increased the power of the catholic church, which weakened the power of individual kings.
d. the crusades caused nobles to feel a religious obligation to end feudalism and manorialism.