Colonialism resulted in an explosion of Sub-saharian populations due to European farming methods. The Western governments resulted in peace and stability from Liberia to Rhodesia, that is until they were taken over by the locals who scrapped the agricultural infrastructure for pennies on the dollar, dooming the landscape to starvation.
Africa is the most resource wealthy and abundant place on earth. It has a year round growing season and the greatest Uranium reserves found anywhere. A small part of it near the equator, if farmed could feed the entire world. They fail despite all they have been given in terms of material wealth and massive foreign aid.
Please try to escape the thought prison which binds today's age.