"American Indian" refers to the diverse groups of indigenous peoples who originally inhabited the land that is now the United States. These groups have distinct cultures, languages, and histories, with over 500 federally recognized tribes, such as the Navajo, Sioux, and Cherokee. Each tribe has its own unique traditions and social structures. The term "American Indian" is often used interchangeably with "Native American," though some prefer specific tribal names. American Indians have faced significant challenges throughout history, including colonization and forced relocation, but they continue to maintain their cultural identities and contribute to the broader American society.