How did work change between 1800 and 1850 in the north and south?

The North developed economically much more than the South in the first half of the 19th century. Slavery was quickly abolished and the economy reverted to the rising industry to such an extent that during the Civil War about 80% of the industry in the USA was in the North.

Explanation:

answer; (d) i believe that the correct answer is americans finally ran out of ammunition;