When did colonists in the Americas turn to the African continent as a site for extracting slaves?

Early 1500's / 16th Century

Explanation:

During the 16th century, African adventurers joined into the spirit of the Age of Exploration and crisscrossed the globe. In the early 1500s.

Explorers and Colonists Grotius Africa accurateness tabla During the 16th . North America, they had been caught up in the transatlantic slave trade-a web of . Life on all four continents, and would shape the African experience in America . In West Africa, and over the centuries would extract an immeasurable human toll.

Explanation: Where did most slaves in the American colonies come from?The majority of enslaved Africans went to Brazil, followed by the Caribbean. A significant number of enslaved Africans arrived in the American colonies by way of the Caribbean, where they were “seasoned” and mentored into slave life.

answer:

d. because dr. laguardia selected a widely used measure, his study generalizes to has strong external validity. external validity has limited external validity. other applications of this measure.

the widely used measure that he applied to his experiment was the benton facial recognition test. it employed on to football players and as result, only players who suffered brain concussions did not pas this test. and although it has an external validity, it is limited because it isn't general to apply to other population.