The islamic world experienced a dark period during the 1200s and 1300s. what was the principal cause of the islamic world’s hardships?
a. muslim nobles subjected most muslims to a miserable, difficult life of serfdom.
b. european crusaders, attempting to win back jerusalem, enslaved most of the muslim world.
c. mongol armies from central asia repeatedly invaded and conquered parts of the muslim world.
d. christians from the byzantine empire continually tried to convert them to christianity.