re: The real problem with Africa
Is the same as the real problem in a lot of other small countries: Collectivist governments which have turned nations and people with a lot of potential into basket cases.
There may be cultural issues as well, but they have nothing to do with race. Ironically, the American black culture isn't a very healthy one. Employment and other social statistics for black immigrants from many different countries look a lot better as a whole than those for African-Americans. Which not only proves my point about culture, but further disproves your point on race.