Final answer:
Most slaves in the West Indies and Americas were put to work on sugar plantations in the Caribbean and Brazil.
Step-by-step explanation:
The majority of enslaved people in the West Indies and Americas were put to work on sugar plantations. These plantations were primarily located in the Caribbean and Brazil. Enslaved Africans were imported to cultivate, harvest, and process sugar cane, which was a highly profitable cash crop. The demand for sugar led to the importation of millions of enslaved Africans to these regions.