Enough of the social engineering crap! Look what has happened to two thriving states, Rhodesia and South Africa! Once strong economies, they were taken from those who built them, given to those who benefited from them, and run into the ground by the latter.
The ugly truth is that Rhodesia and South Africa were the main obstacles to a world Communist triump in Africa, and had to be eliminated using the UN and world opinion (take a bow, NYT and Wash Compost). In a morbidly ironic way, by the time these two states were neutralized, Ronald Reagan and Maggie Thatcher had neutralized the perpetrators. No one was able to step into the vacuum and left to themselves, the Africans have degenerated into tribal warfare.