The US has bizarre classifications that make no sense anywhere else. Why are people from Spain Hispanic but not from Portugal, why are Mexicans Hispanic even if

The US has bizarre classifications that make no sense anywhere else. Why are people from Spain Hispanic but not from Portugal, why are Mexicans Hispanic even if they are descended from Aztec people. The idea that all Asians are the same is equally insane. Even White is a stupid concept that has no meaning. If I came from Spain I'm hispanic but if I came from just over the border in France I'm white. If I come from South Africa and move to the US I'm either African-American or White depending on my ancestry even if it goes back 2 centuries. It's a dumb concept that mostly makes sense to anyone. Yet it persists in these strange classifications that have no basis in any scientific system.