Why in some countries are black people not considered human?

Political Correctness doesn't exist in those countries.

Black people are a liability in any country they live in- the United States, Europe etc. They do the most crimes in those countries and don't have any prospects of thriving. They have the lowest IQs of any other racial group (only Aboriginals have lower IQ levels). Throughout history they have not built any architecture except the city of Great Zimbabwe and the Nubian Pyramids, did not build any culture, did not invent any method of writing and did not found any great civilization. Today they are still relatively backwards. Black countries are the poorest compared to any other nation in the world and need foreign investment; when White farmers were expelled from Zimbabwe their lands became barren because Black people did not use them to grow their own crops. Black people lack the FYA gene, present in every Human of every other race.