Why does Africa always get the most shit for being "historically underdeveloped" when they were way more advanced than the American Indians? In the 1890s the Sioux were trying to defeat the white man with a "spirit dance" while Dahomey had a standing army of Winchester rifle armed troops and even some Krupp guns.
Scientific achievement isn't the be-all-end-all of intelligence, the Africans were clearly highly organized and wealthy to import modern firearms and set up standing armies unlike the American Indians. Even the legit "spear chuckers" the Zulu showed outstanding outstanding logistical and tactical ability if you read about those wars. Shaka refused Dutch offers of firearms because he argued that the slow rate of fire would hinder his army's swift shock tactics and he was partly right because he ended up doing better against the British with just spears than other Africans did with guns. So it wasn't because he was "too dumb to use a gun"
According to your much worshipped IQ scale blacks are at the bottom yet historically some African kingdoms weren't much less developed than some Asian ones, this is evident by the fact that both regions resisted the Europeans for around the same time. Any difference is probably better explained by the Sahara barrier. Therefore American Indians aren't racially inferior either, they just got fucked over by being furthest from Indus Valley civilization
tl;dr IQ is bullshit because it uses a very narrow criteria of intelligence and doesn't take into account things such as geography and culture.
