How did the Middle Colonies make a living?

They grew corn, cotton, Hemp, and tobacco as their main crops. The Natural Resources of the South CSA nation was rich and the South nation was the wealthy nation of the TWO nations in America, both established by the Founders from the beginning. The South nation supported the North US nation until Lincoln invaded the South CSA nation and burned it to the ground. Remember Lincoln was never the president of the CSA South nation and had NO authority below the Mason Dixon line. The CSA South nation had its own government and president.