Why did Spanish colonists begin to rely more heavily on the Atlantic slave
trade by the mid-1500s?
OA. Indigenous populations gained independence and liberated
themselves from forced labor.
OB. Legal restrictions and outbreaks of disease made it difficult to get
sufficient labor from indigenous populations.
C. Spain had established new African colonies and had begun to
enslave their populations.
D. Fewer Spanish servants were willing to travel to and work in the
colonies.