The term Apache has its roots in the Spanish language. The Spanish first used the term Apachu de Nabajo (Navajo) in the 1620s. In 1900, the US government classified the members of the Apache tribe in the United States as Pinal Coyotero, Jicarilla, Mescalero, San Carlos, Tonto, and White Mountain Apache. The different groups were located in Arizona, New Mexico, Oklahoma and Texas.