Which two factors contributed to the spread of islam in africa?
a islam was already practiced by people in africa.
b many africans no longer believed in their own religions.
c the islamic empire extended into north africa.
d the gold-salt trade brought islamic arabs into western and southern africa.

the main inference that can be drawn from jean jacques rousseau's book the social contract is: a. people can enjoy civil and physical freedom, even if it sometimes harms society.

although the crusades failed to capture jerusalem, they had several major impacts on western europe. they increased the authority of the king: sometimes nobles died in battle without leaving an heir in which case the king got their land. kings passed taxes to pay for the crusades.