I am glad you brought up the slavery issue. It was wrong but if you go back a little ways the white people did not go to Africa and round them up. The really nice black neighbors in Africa rounded up the weaker tribes and sold them into slavery. We were the ultimate customer but lets let the black slavers get some of the reward. By the way were in Africa would you want to return to if you could. I can't think of one country I would even visit much less live there.
Actually white people DID go to Africa and round them up. Those were not African owned ships or monies paid by Africans. Return to Africa? I was born here. The Serengeti has no appeal to you?
Tribal wars was a main help in bringing slaves to Eroupe and America, but you are also correct Africans were also captured by the white shippers and brought to America.