[DoodleDawg]

The North had stiff tariffs on cotton, which financially hurt both the Southern states and Britain — the South sold less cotton than they would without the tariffs, and Britain would have paid lower costs for the cotton.

Cotton was an export. Tariffs are placed on imports.

[Freedom_Is_Not_Free]

http://www.emarotta.com/protective-tariffs-the-primary-cause-of-the-civil-war/