Answer:
John Caldwell Calhoun
Explanation:
John Caldwell Calhoun was an American senator from South Carolina who served as the seventh vice president to the United States (1825-1832). Calhoun is remembered for his argument that slavery is not only a "necessary evil" but is in fact a "positive good." Calhoun also argued that minorities (in this case, white Southerners) needed to be protected in politics. Although his views changed with time, he was still a strong influence in the South's decision to secede from the North.
