This document discusses ethnic groups in the Philippines. It defines ethnic groups as having a common territory, cultural heritage, language, and ancestry. During the Spanish period, ethnic groups were categorized as Christian, non-Christian, or Muslim. Major ethnolinguistic groups in the Philippines include Ilocano, Tagalog, Cebuano, and others. Cultural minorities live in coastal, lowland or riverine areas and retained indigenous cultures, while majorities adopted blending of Spanish, American and native cultures. The document lists various indigenous ethnic minority groups living in upland areas of Luzon, Mindoro, Palawan and throughout the archipelago. It notes that while tribes enjoy some autonomy, all groups are under Philippine government jurisdiction