If you honestly want to know, you should read "Gun, Germs and Steel" by Jared Diamond.I would like to know why there is no first world, stable, black, democracy anywhere in the world.
You cannot claim blacks are soley victims of slavery, poverty, etc since many of their same behaviours exist in Africa proper.
At one time, the whole world was poor and uneducated and still, some groups of people were able to pull themselves out that.
I still think that the winters of northern Europe were a determining factor that forced evolution of the people that lived there. Either you evolved by creating shelter, storing food, etc or you died. I cannot think of a better evolutionary filter.
Most of the worlds industrial centers lie away from the equator. Interesting.....
He goes into a great deal of detail, but I'll sum it up a big point quickly.
Europe and Asia are oriented W-E, Africa is N-S. Therefore societies in Europe and Asia share climates where as societies in Africa don't.
That means technologies developed in Europe and Asia can be traded and used, whereas similiar advances in Africa could not.