Looking at Africa as a whole is about the same as looking at Europe as a whole. Each country has it's own sources of wealth and problems and they differ vastly from state to state. You can't compare Egypt to Sudan just like you can't compare France to Romania as all nations and both groups have vastly different cultures and GDPs. I agree that there's a certain misconception about Africa in the West, but that's what they get taught in school and there's a whole lot of whitewashing of their history and demonizing of them as peoples. You're basically taught that Africa is/was poor and helpless and is/was full of savages until they were colonized, which isn't really the truth. Demonizing races or peoples is the easiest easy you can get away with abusing them and justifying invasions and colonization etc and it still happens today, but focus has shifted to the Middle East because those are the wealthiest oil-rich nations and are the easiest ones to demonize and invade.
This is why Africa is poor.

The only way you are ever going to be able to do anything about it is to take the facts into consideration and plan accordingly instead of trying to blame it on everything and everyone else..
It's not really but that's what a lot of white supremacists like to tell themselves to justify abuses. What's the source for this study and how were they tested exactly? You will find that a lot of low IQs go hand in hand with poverty and a lack of education, and there are a whole load of reasons for that. Without access to a good education you're not going to have a very high IQ and the cycle repeats itself. I'm sure if you took the IQs of white American's living in trailer parks and in poverty you'd find they wouldn't score very well, but we wouldn't blame their race for that.