Demographics of South America from Spain. South America is also home to 124 million Castizo, Mestizo or Caboclo people (citizens whose DNA is mostly European spanning from 65 to 90% European genes with considerable Indigenous admixture) and 27 million people with pure Indigenous extraction, mostly found in Peru, Bolivia, Ecuador, Chile and parts of Argentina. Mestizos make the majority in Paraguay, Venezuela, Colombia and Ecuador. Black phenotype and Mulatto population are respectively 18 and 48 million, when combined 66 million. Mulattos have a range of 60 to 80% European genes and are mostly found in Brazil, Colombia, Venezuela, Ecuador, Guyana, Suriname and French Guiana
Geography of South America Great American Interchange. The Andes, likewise a comparatively young and seismically restless mountain range, runs down the western edge of the continent; the land to the east of the northern Andes is largely tropical rain forest, the vast Amazon River basin. The continent also contains drier regions such as eastern Patagonia and the extremely arid Atacama desert. The South American continent also includes various islands, most of which belong to countries on the continent. The Caribbean territories are grouped with North America. The South American nations that border the Caribbean Sea—including Colombia, Venezuela, Guyana, Suriname, and French Guiana—are also known