In Africa, Blacks had an evolutionary advantage by chimping out.
Chimping out, behaving aggressively and violently, was more likely to scare off dangerous wildlife. Aggression in negroes was also more likely to be able to survive against other aggressive wildlife, which was plentiful.
Therefore Black genes were environmentally selected for chimping out over thousands of years.
albatrosv15 0 points 5 months ago
Mfecane supports your theory.