This action by Congress limited the president's abilits to go to
war without support of Congress

The War Powers Resolution (also known as the War Powers Resolution of 1973 or the War Powers Act) (50 U.S.C. 1541–1548) is a federal law intended to check the U.S. president's power to commit the United States to an armed conflict without the consent of the U.S. Congress.

Explanation:

the answer is a. since they were a huge producer of cotton and wanted the most money for it.