Nonsense. Africa could keep all of its resources and it would still be a sh!thole.
Heck, they don't even want their own resources. They want Western products instead. The corrupt African despots all want to drive around in fancy Western SUV's, fly fancy Western aircraft, watch fancy Western TV and movies, as well as use fancy Western computers and software.
Oh gee, then after they notice that they've spent all of "their" money from selling their nautral resources, they start complaining that it's all the West's fault that Africans have polluted their own drinking water, confiscated productive farms in order to give them away to their own political cronies, let their Western-built roads, ports, and infrastructure crumble, and finally notice that their own people are diseased, starving, uneducated, and dying.
So we should give them more money, they beg. Besides, that new Gulfstream V would look great in the Royal hangar, er, I mean all of that money would sure feed a lot of our starving masses...