africans evolved in a land of plenty. they are lower in iq by several standard deviations as a result of this, compared to races that evolved in brutal climates that require planning, cooperation, and forethought to survive (europeans and some asians). their numbers are artificially inflated due to food aid from white european and diaspora countries, so their numbers are not kept in check organically. they cannot sustain themselves in their current numbers, due to the central problem of the low iq and requiring constant direct force to be productive. the african diaspora suffers the same exact problem everywhere on the planet, requiring food aid and welfare to survive when they aren't openly stealing. watch the well-known documentary of empire of dust for your answers.
United States