Final answer:
Ports in North America, such as Charleston, South Carolina, were critical in the Trans-Atlantic slave trade, leading to significant profits and the growth of plantation economies.
Step-by-step explanation:
The areas of North America involved in the Trans-Atlantic slave trade featured major ports that were essential for the transportation of enslaved Africans to the plantations in the New World. Specifically, colonial Charles Towne, known today as Charleston, South Carolina, was the most prominent port in the southern part of North America and played a significant role in the slave trade.
The economic growth in America and Europe was significantly boosted due to the excessive profits made from the slave trade and the plantation system that depended on slave labor.