the culture predominant in Africa does not led itself toward economic progress
Yes this is exactly right. Its all in the culture. Westerners happened to stumble upon a set of values that are conducive to wealth creation while the africans have, for various reasons, not developed these sorts of values. The values that africans have are actually sort of noble, its not for lack of morality or anything like that, its unfortunate that the right values for wealth creation are so unintuitive.
Guess it's time to hand out copies of Atlas Shrugged, instead of bibles.