The Chamorro Nation (Chamorro: Nasion Chamoru)[1] is a political movement seeking sovereignty for the island of Guam, founded by Angel Leon Guerrero Santos.[2] The Chamorro Nation was formed on July 21, 1991,[3] comprising numerous grassroots organizations which advocated for the protection of Chamorro land, culture, and political rights.[1] As a political movement, the Chamorro Nation is recognized as a key turning point in changing Chamorro attitudes toward the United States and increasing the desire for Chamorro rights, particularly the return of lands seized from Chamorros by the US federal government.[1]