Why is the United States so segregated?

[Flilix]

LuccaCardoso1 said:

Flilix said:

Why would someone get asked what their race is?

First time I entered the US, they asked me to fill in a form, and one of the questions was what my ethnicity is. That's a fairly common question in forms, actually.

I get that they're asking what country you're from, but why would they be interested in your skin colour? That's just as useless as asking your shoe size.