Ethnic groups of the United States

There are many different ethnic groups in the United States. Most people in the United States have ancestors who came from somewhere else, often from multiple places. Some people say their ancestry is "American"; often these are people from the Southern United States whose families have been living in America since before the American Revolution.
There are several races in the United States:
The race is not the same as ethnicity, however. Here are the top three ethnic groups in the United States. Since many Asian and Hispanic people are classified differently, most of the groups listed are white.