Answer:
The Triangular Trade, European ships brought manufactured goods, weapons, even liquor to Africa in exchange for slaves; on the second, they transported African men, women, and children to the Americas to serve as slaves; and on the third leg, they exported to Europe the sugar, rum, cotton, and tobacco produced by the enslaved labor force. Traders referred to the Africa-Americas part of the voyage as the "Middle Passage" and the term has survived to denote the Africans' ordeal.
The Middle Passage was brutal and degrading often lasting anywhere from 1-3 months. Traders chained the slaves in the crowded hold of the ship. This stopped slaves from jumping overboard or causing trouble aboard ship.