WHY AFRICA? PART 1

So,I have been thinking about this for awhile now. why Africa?. Did you know Africa is actually the most wealthiest continent in the world in terms of natural resources? yet we are one of (if not) the most underdeveloped and poorest continent in the world. so what and where did all the resources in Africa go to? Resources like Gold, Diamond, Salt, Iron, Cobalt, Uranium, Copper, Bauxite, Silver, Petroleum and Cocoa beans. Truth is we all have no idea. so can someone please explain to me why or how the wealthiest continent in the world ends up the poorest. ONE LOVE WATCHOUT FOR PART 2.