The first group of African slaves was brought by

European Nations

Explanation:

In the 1500s, the Spanish were the first to bring enslaved Africans to North America as part of their colonization efforts in Florida and the Carolinas. By 1620, close to 520,000 captured and enslaved African men, women, and children had already been sold into chattel slavery by several European nations.

ba geologist finds four sedimentary rock she determines that no geologic events have shifted the layers she labeles them a,b,c,dbfrom top to bottom

(d) take jobs from american workers.