<Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (August 2015) (Learn how and when to remove this template message) </Td> </Tr> <P> The history of South America is the study of the past, particularly the written record, oral histories, and traditions, passed down from generation to generation on the continent of South America . South America has a history that has a wide range of human cultures and forms of civilization . The Norte Chico civilization in Peru is the oldest civilization in the Americas and one of the first six independent civilizations in the world; it was contemporaneous with the Egyptian pyramids . It predated the Mesoamerican Olmec by nearly two millennia . </P> <P> While millennia of independent development were interrupted by the Portuguese and Spanish colonization of the late 15th century and the demographic collapse that followed, the continent's mestizo and indigenous cultures remain quite distinct from those of their colonizers . Through the trans - Atlantic slave trade, South America (especially Brazil) became the home of millions of people of the African diaspora . The mixing of races led to new social structures . </P> <P> The tensions between colonial countries in Europe, indigenous peoples, and escaped slaves shaped South America from the 16th through the 19th centuries . With the revolution for independence from the Spanish crown achieved during the 19th century, South America underwent yet more social and political changes . These have included nation building projects, absorbing waves of immigration from Europe in the late 19th and 20th centuries, dealing with increased international trade, colonization of hinterlands, and wars about territory ownership and power balance . During this period there has also been reorganization of Indian rights and duties, subjugation of Indians living in the states' frontiers, that lasted until the early 1900s; liberal - conservative conflicts among the ruling classes, and major demographic and environmental changes accompanying development of sensitive habitats . </P>

What two european countries colonized most of south america
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