Multiple choice In the 1700s, the triangular trade led directly to the middle colonies' role as the chief importers of food goods rapid industrialization of the southern colonies decline of New England economy increased importation of enslaved Africans to the US Reveal answer Fill a bubble to check yourself D Correct answer Explanation The triangular trade involved the shipment of enslaved Africans to the Americas as part of a system to provide labor for plantations, which were central to the colonial economy.