This Tech Central Station article, “Saving Africa,” puts some figures in perspective, citing the reason for the poverty of African nations: “Africa is poor because most countries in the region lack the fundamental elements of a capitalist system: property rights, free markets, free trade and the rule of law.”
The TCS piece quotes a 1998 Religion & Liberty article by Gary Becker, “Human Capital and Poverty,”
It is not the culture that has prevented Africa from growing but the policies governments have inflicted on their people. With good policies, there is nothing in African culture to prevent these nations from joining in increasing numbers the economically advanced nations of the world.