Which of the following was a direct result of islamic expansion into spain?

christians were forced to convert to islam.
the umayyad army marched into central asia.
charles martel led armies in the battle at poitiers in 732.
the islamic law was changed to be more like catholicism.

question 25 (multiple choice worth 1 points)

(01.05 mc)

which event produced a major change in the roman empire's religion?

constantine recognized the legality of christianity.
muhammad began a campaign of conversion to islam.
trade with asia introduced new ideas, such as hinduism.
emperor julian renewed the worship of the roman gods.