The middle colonies thrived because their location along the coast fostered trade with europe and the caribbean islands. the lack of diversity among the population fostered harmony and led to fewer disagreements. good relations with american indians throughout the 1600s and 1700s led to peace. poor agricultural conditions forced colonists to turn to timber, fishing, and other industries.

The correct answer is A) their location along the coast fostered trade with Europe and the Caribbean Islands.

The middle colonies thrived because of their location along the coast fostered trade with Europe and the Caribbean Islands.

The middle colonies were New York, New Jersey, Delaware, and Pennsylvania. Families in the Middle colonies had farms and worked very hard to produce crops to feed themselves and to trade with other colonies. These territories were known for their fertile land and produced many crops to the degree that the Middle colonies were known as the "Bread Basket" colonies. They produced hemp, wheat, rye, and corn. So the transportation of products was key to the success of their economy.