First, slaves were brought over by the Atlantic trade or in other words Triangular trade. Since early 1800s, we were facing urbanization and a lot of factory being built throughout the nation. Which means more railroads, banks, and markets. However that occurred in the northern states such as New York, New Jersey, Pennsylvania, and other northern states. But in the southern states, they all about living in world it once were, lack of technology and industry support. In southern states, they need someone to help them do the plantation. These plantations were sugar, cotton, tobacco, and others. So they turned and relied on the slavery.
