Question

what question caused tensions between the us federal government and the south carolina state government during the nullification crisis?
a can congress regulate the practice of slavery in territories of the united states?
b do state governors or the us president have ultimate authority over state militias?
c is a state required to abide by a federal law that the state believes is unconstitutional?
d are citizens of states that have outlawed slavery required to abide by the fugitive slave act?

Explanation:

The Nullification Crisis centered on South Carolina's opposition to federal tariff laws, which the state deemed unconstitutional. The core dispute was whether a state could reject (nullify) a federal law it believed violated the Constitution, meaning the key question was if states must follow such laws. The other options relate to different 19th-century U.S. conflicts: A refers to slavery in territories (pre-Civil War debates), B to militia authority (not the Nullification Crisis), D to the Fugitive Slave Act (a later slavery-related dispute).

Answer:

C. Is a state required to abide by a federal law that the state believes is unconstitutional?