Which or the following groups has lived on the continent of south america for the longest time? africans native americans spaniards portuguese

Native Americans have lived on the continent of South America for the longest time.
There had been several Native American tribes that had inhabited the continent long before the New World was discovered.

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Aregion is an area of land that has common features. these features can be natural, such as climate or landscape. they can also be artificial, such as language or religion. the xinjiang uyghur autonomous region, above, is an area of china inhabited by uyghurs, a muslim group with ethnic ties to turkish people.