They mostly live outside of modernity. They are agricultural and sometimes even pre agricultural societies with no conception of family planning or contraception. They have an average IQ of 70 and are essentially similar to animals. They fuck and pop out niglets. They follow their instincts, little different than a pig or a cow.

They have always bred like this. The reason their numbers didn't grow in the past is because they lacked the food, medicine or sanitation to sustain a large population or prevent diseases. European introduction of civilization to Africa has enabled the population explosion.