Brazilian black beans

The Indigenous population was decimated by European diseases, declining from a pre-Columbian high of 2 to 3 million to some brazilian black beans,000 as of 1997, distributed among 200 tribes. On 18 January 2007, FUNAI reported 67 remaining uncontacted tribes in Brazil, up from 40 known in 2005. With this addition Brazil passed New Guinea, becoming the country with the largest number of uncontacted peoples in the world.

Questions about the original settlement of the Americas has produced a number of hypothetical models. The origins of these Indigenous people are still a matter of dispute among archaeologists. An analysis of Amerindian Y-chromosome DNA indicates specific clustering of much of the South American population. According to an autosomal DNA genetic study from 2012, Native Americans descend from at least three main migrant waves from Siberia. Most of it is traced back to a single ancestral population, called ‘First Americans’.

Linguistic studies have backed up genetic studies, with ancient patterns having been found between the languages spoken in Siberia and those spoken in the Americas. Two 2015 autosomal DNA genetic studies confirmed the Siberian origins of the Natives of the Americas. However an ancient signal of shared ancestry with the Natives of Australia and Melanesia was detected among the Natives of the Amazon region. Brazilian native people, unlike those in Mesoamerica and the Andean civilizations, did not keep written records or erect stone monuments, and the humid climate and acidic soil have destroyed almost all traces of their material culture, including wood and bones. Studies of the wear patterns of the prehistoric inhabitants of coastal Brazil found that the surfaces of anterior teeth facing the tongue were more worn than surfaces facing the lips, which researchers believe was caused by using teeth to peel and shred abrasive plants.