5. What role do you think John C. Calhoun played in Jackson's victory in 1828 ? Use information from the map in your answer.

John C. Calhoun played a significant role in Andrew Jackson's victory in the 1828 presidential election by mobilizing support in the Southern states. Calhoun, a prominent politician from South Carolina, was instrumental in rallying the support of the Southern states for Jackson's candidacy. The map likely shows that Jackson secured a majority of electoral votes from the Southern states, where Calhoun's influence was particularly strong. Calhoun's endorsement and efforts to unify Southern voters behind Jackson helped secure his victory in 1828.