where the hell do you get this from
sorry i don't normally make offhand posts like this but im legitimately curious who or what gave you this understanding of history
Even with the help from the white man, the white man giving education to africans to this day, there is still very little immigration going on. They can't afford clean water and food, they aren't going to be able to afford traveling to America.
So imagine a world where white people didn't accept black slaves and didn't send the educated slaves back to their homeland. The entire country of africa in 2016 would be no different than it was 500+ years ago. Some parts of africa still have tribes that never seen a white man before, I somehow doubt they will immigrate to America anytime soon.