Triangular trade - colonial trade routes among Europe and its colonies, the West Indies, and Africa in which goods were exchanged for slaves
Accomplished - highly skilled
Line of demarcation - line set by the Treaty of Tordesillas dividing the non-European world into two zones, one controlled by Spain and one controlled by Portugal
Circumnavigate - to sail completely around
Middle Passage - the leg of the triangular trade route on which slaves were transported from Africa to the Americas