The ethnic composition of Bolivia, officially known as the Plurinational State of Bolivia, is very diverse, the majority (55%) being formed from Indigenous, also called "originarios" or Amerindians, to which are added mestizo (30%), white (15%), Afro Bolivians, and Asians. The largest of the approximately three dozen native groups are the Quechuas (2.5 million), Aymaras (2 million), Chiquitano (180,000), and Guaraní (125,000). Andeans, as the Aymaras and Quechuas (which formed the ancient Inca Empire), are concentrate in the western departments of La Paz, Potosí, Oruro, Cochabamba and Chuquisaca, and the oriental ethnic population, composed by the Guaraní and Moxos, among others, inhabit the departments of Santa Cruz, Beni, Tarija and Pando.
