Answer:
Another effect of the spread of Islam was an increase in trade. Unlike early Christianity, Muslims were not reluctant to engage in trade and profit; Muhammad himself was a merchant. As new areas were drawn into the orbit of Islamic civilization, the new religion provided merchants with a safe context for trade.
Try you best and look it up
but also yhu could just do what i do and just look at what it saids and reread it
Answer:
Do you know what x is? You cannot solve this unless you know x.
B. Ethnic Cleansing
Both cases occurred because another race who had more power tried to eliminate the other race.