Question

Define the three categories of people living in the United States

Answer 1

Citizens by birth - Being born in the United States

Naturalized Citizens - Having to live in the state for a very long period of time

Noncitizens - Not a legal member of the state

Answer 2

If you refer to social classes the answer is:

The American Social Class system is divided into three layers:

Upper Class; Middle Class and Lower Class and are based on socioeconomic conditions.