Final answer:
Andrew Jackson called for the support of South Carolina's people in upholding the Union and preventing civil war, mainly in response to South Carolina's nullification of federal tariffs and to preserve the federal authority.
Step-by-step explanation:
Andrew Jackson called for the people of South Carolina to support his call not for a civil war but to preserve the Union and enforce the law. Jackson sought to use moderate and firm measures to prevent civil war by upholding the will of the majority against the nullification actions taken by South Carolina. The crisis was eventually defused by the Compromise Tariff of 1833, which lowered tariff rates and the Force Bill, which permitted the use of federal troops to ensure compliance with federal laws. Jackson's objectives were to maintain majority rule, uphold the justness of constitutional laws, and preserve the Union. These efforts were in response to South Carolina's nullification of federal tariffs, which challenged federal authority and threatened to fracture the United States.