4 and 5 have very different answers depending on race. I’m white, have a Midwestern accent, and was born here. I can look at this person like they’re a moron and ask if they’ve never heard an ohio accent before or what. A Latino born in the same hospital who grew up a town over has to be more diplomatic about explaining that them and their parents were born here.

Similarly a white person naturalized from Australia can be a lot more blase than a brown person naturalized from anywhere.