I'm pretty sure (1.) is A, and I know for a fact that (3.) is D because slavery was a regular practice between quarreling tribes. I have no clue what (2.) is. Best of luck.
Because buffalo were such big animals they could feed a lot of people and many of their parts came to use such as their hides and horns
D, mass production was made easier by assembly lines because products could be made faster
Answer:
The right choice is:
Islamic armies conquered major cities to help spread Islam in three continents.
Explanation:
Following the death of the prophet Muhammad in the 7th century, a powerful wave of Arab, Muslim expansion swept across Asia, Europe and Africa. They established caliphates and empires that turned into major centers of learning and study in the next centuries.
