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NEW YORK – By analyzing the genomes of modern Native Americans, researchers have begun to piece together how the Brazilian coast was first settled.

During the 15th century, about 900,000 Native Americans, most of whom spoke Tupí, lived along the Brazilian coast. But following the arrival of the Portuguese in the region in the 16th century, the native coastal population declined quickly and became extinct by the end of the 18th century, except for two small admixed communities that self-report as Tupí, the Tupiniquim and the Tupinambá.

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