>>22310427because they put their evolutionary points into breeding instead of intelligence. if you live in a jungle type shithole you tend to have between 10 to 15 children because most of them will die to tropical deseases and predators anyway. blacks never had winter, they never had reason for making buildings, establishing trade beyond their borders or anything that would require intelligence because they can just pick fruit/chase animals all day instead and just fuck if the numbers in their tribe dwindled.
like seriously what do you do in a place like this other than forage/hunt, do basic chores, have basic entertainment like music and dancing, drink and fuck? the fact that they even figured out how to do farming is impressive to me.