Answer:
C) threatening to secede from the Union.
Step-by-step explanation:
In the early 19th century, South Carolina became upset by the Tariff of 1832, which imposed on them. South Carolina leaders threatened to secede from the Union. South Carolina believe Tariff of 1828 to be unconstitutional, which would hurt the Southern States economically. The Tariff caused Nullification Crises in America and opened the conflict for the first time between the South and the North. In 1860, 11 Southern States succeeded from the Union.