I don't know if I agree with that, Backspace. I spent 2 years in Southern Africa in one of the poorest countries in the world, Lesotho. As the only white skinned person for maybe 40 miles in any direction (till the next US Peace Corps volunteer), I was treated with respect by a people that had lived through some tough times with apartheid white rule, and they still spent alot of time singing and dancing.
With the singing and dancing, and the history of the local elders meeting to solve problems, and the chiefs dividing and giving out land, is western capitalism and wealth necessarily evolved that much better?
Health care would be perhaps the best argument for African countries being behind, but there is a wisdom in the way Africans live - to say "least evolved" may be too generalized.