Why did New England an the Caribbean fin a single economic region?

New England and the Caribbean formed a single economic region primarily due to their complementary economies and trade relationships in the 17th and 18th centuries. New England's agricultural products, fish, and timber complemented the Caribbean's sugar and rum production, creating a lucrative trading network. Additionally, the triangular trade route facilitated the exchange of goods, enslaved people, and raw materials, further integrating their economies. This interdependence fostered economic growth and cultural exchanges between the regions.