NASA chief says space 'has commerce that needs to be protected' as he backs Trump's plan for armed Space After the highway projects came giant hydroelectric projects, then swaths of forest were cleared for cattle ranches. This is reflected in their rich oral history, cosmology, myths and rituals. Ancestry and ethnicity in Brazil. With this addition Brazil has now surpassed New Guinea as the country having the largest number of uncontacted peoples. Bureau for Democracy, Human Rights and Labor. Anthropological and genetic evidence indicates that most Amerindian people descended from migrant people from North Asia Siberia who entered the Americas across the Bering Strait or along the western coast of North America in at least three separate waves.