three of those links are about the same study suggesting pre-colonial movement west from the south american coast towards polynesia, and one is about analysis of ancient remains.
this study involves a large genetic survey of modern indigenous populations not only along the coast but also in the interior of the continent, that suggests ancient movement from polynesia to the south american continent.
this study involves a large genetic survey of modern indigenous populations not only along the coast but also in the interior of the continent, that suggests ancient movement from polynesia to the south american continent.