This document provides an overview of multiculturalism in the United States. It discusses how the US has become a highly diverse nation through immigration from many parts of the world. It also examines the concepts of the "melting pot" and "salad bowl" in describing cultural diversity in American society. The document then profiles the various ethnic and racial groups that comprise the population of the US, including Native Americans, European colonists, African Americans, Asian Americans, Latin Americans, and others.