How did the kingdoms of Kush and Egypt interact with each other economically?

The Kingdom of Kush traded many goods with their close neighbors of Egypt. When trading they began using camels for transporting goods around 750 C.E. Egyptians depending on Kush for iron and gold.

Explanation:

du boi was considered a radical because he wanted the immediate end for segregation. the biggest different between him and booker t. washington is that, even though washington believed that segregation should be considered illegal, he did not believe at all that a law was needed to keep blacks away from whites and that this would be something natural (to have the races apart) for a long time until society adjusted, while du boi believe that agitation was the only way to end segregation.