THINK ABOUT IT: For the most part, Southerners were the major supporters of states’ rights. What state-level interests would the South want to stop the federal government from making laws about?

Slavery and tariffs

Explanation:

The two most prominant examples at the time were slavery and tariffs. Leading up to the American Civil War, slavery become an aggressivly contested issue and Southern states felt their institutional slavery was under threat from a Northern-dominated federal government. In similar vain, federal tariffs (specifially the Morrill Tariff) put strain on the South's economy, while palcing little on the North. Both were heavily tied to the regions economic well being.

the answer is a. apartheid.