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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