Just how can all of black Africa's "Woes" be blamed on the White man?

I keep hearing that, I just wonder how could that be. Yes, maybe the White man may have taken some of their gold and diamonds, so what, those are just trinkets, tell me that some African in Rwanda wouldn't gladly trade a piece of shiny stuff "diamond" he found stuck between his toes after a day of wondering around in the jungle for a $35 ax from WalMart. Over 1 billion in Africa, only decent places to live are the ones are the ones with Whites living there making them that way. Any Ideas on this. Black Africa the same now as before the White man came there, so can't blame that.