How did the slave trade differ in different parts of africa?
and also
who was most responsible for the tragedy of the slave trade?

The three other slave trades -- the trans-Saharan, Red Sea, and Indian Ocean slave trades -- are much older and predate the trans-Atlantic slave trade. During the trans-Saharan slave trade, slaves were taken from south of the Saharan desert and shipped to Northern Africa

Explanation:

The Atlantic slave trade. A main cause of the trade was the colonies that European countries were starting to develop. In America, for instance, which was a colony of England, there was a demand for many labourers for the sugar, tobacco and cotton plantations.

the answer is b. 300t + 3/2xt

they united the colonies in their fight against the british.