1580-1640
1580-1640: During the period when Portugal and Spain were ruled by a single monarch, over 75 percent of all transatlantic slaves were carried in Portuguese s…
1580-1640: During the period when Portugal and Spain were ruled by a single monarch, over 75 percent of all transatlantic slaves were carried in Portuguese ships. Most of these vessels operated from and returned to the burgeoning sugar economy of Brazil.
Source · p. 25, 43
Eltis & Richardson, Atlas, 25, 43