C. required all citizens to help in the capture of runaway slaves
I think it's D because back then people thought that the sun revoled around the earth
Islam was introduced to west Africa by (c. traders)
The answer is <span>to provide greater access to higher education in response to a growing population</span>
There are taxes added to the cost. Some countries don't have as much money for the extra charge, restricting them from trading certain items.