cotton and sugar cane
sugar
The South was a cash crop economy of cotton and tobacco.
Sugar..
Because they were cheap labor. They wanted to be able to do unwanted work cheaply without doing it themselves. It started with indentured servants, which eventually lead to African slaves. they were mostly used in the south for the tobacco crops which the leaves had to be harvested by hand. The other main crop they were used for is cotton.
because unlike the North the south didn't have the right economic system for it to have factories. The South was not industrialized like the North was, therefor it had slaves. also it had large plantations of cotton and other plants, that farmers couldn't harvest alone so they used slaves.
Slave labor
Slave Labor was needed
Sugar
Settlers in Brazil grew sugarcane as their first crop. The crops were labor intensive which was a catalyst for bringing in slave labor.
corn
Slave labor was needed.
Slave labor was needed
Both crops could be grown using the same labor force
The combination of the cotton gin and slave labor made cotton a profitable crop for plantation-style agriculture.
There was more tobacco and cash crop overall, so the needed more labor to keep up with the amount of work that needed to be done.
In the United States African slave labor was used for tobacco crops. In terms of food crops in the New World, sugar cane harvesting was very labor-intensive and many slaves were used in these endeavors.
sugar