A is the correct answer, but it does hide the truth of the matter.
Governor George Wallace did oppose the integration of the University of Alabama because he believed that integration was a state's rights issue.
What this ignores is the reason. George Wallace did believe in state's rights but he was also a noted bigot and segregationist. George Wallace wanted integration to be a State's issue because he did not want the State of Alabama to integrate due to his feelings about African-Americans.
It was a practice that directly affected the U.S. and was even one of the causes of the War of 1812. The British navy consistently suffered manpower shortages due to the low pay and a lack of qualified seamen. During wartime the navy forced unwilling individuals into service.
Answer:
It led to more trading partners and more industries