@Djeep
What is the point of trying to disprove their low IQ? It's important that you realize your population has a median IQ of 70 so you plan your government, jobs, education and society accordingly.
Africa can still function normally, you simply need to do a lot more hand holding, be more direct and simple with your laws and very strict with punishment, making it public so others get the idea visually.
Don't rely on abstractions or empathy.
Not an easy task, but doable.