Why North Africa is white, not black.

Due to environmental reasons, blacks have been breeding in southern Africa for tens of thousands of years. Because the climate there is hot, all melanin in the body is stimulated, and body hair is the least race. People in North Africa, on the other hand, live farther away from the equator than people in Central and South Africa, so they are less stimulated by melanin, not very dark, and there are also foreigners who migrated in the past.