What is the main reason why southerners might have supported henry clays american system?

It promised to transport Southern crops to markets in the North.

Explanation:

The main reason why Southerners might have supported the American System was due to the promise that it would help transport Southern crops to the North. The American System was an economic plan that was mainly proposed by Congressman Henry Clay. The plan included tariffs to protect and promote American industry, the creation of a national bank and federal subsidies dedicated to infrastructure and agriculture.

in 1862, president lincoln's emancipation proclamation opened the door for african americans to enlist in the union army. although many had wanted to join the war effort earlier, they were prohibited from enlisting by a federal law dating back to 1792.

explanation:

your answer is c i hope that