Which is the main reason southerners my have supported henry clay‘s american system

Your answer would be The American System promised to help transport crops to northern markets.

Explanation:

The reason why "The American System promised to help transport crops to northern markets" would be your answer is because Henry Clay's American system had three main points to accomplish them being:

1). Making tariffs to protect the imports that the U.S is receiving. Tariffs meaning to tax the imports that are coming in

2). To create a national bank to help support the commerce and trades

3). To get more funds to make more roads and canals in the U.S

The reason why the Southerners supported Henry Clay's American system was because of their cotton business. The main thing that the Southerns wanted was profit, and they would need to make their profit from their cotton businesses. Since Henry Clay's American System wanted to focus on making more roads and canals, that would help the Southerners cotton business grow because they would have more people to sell and trade to. They would also have an agricultural expansion because of that. They didn't really support the proposal, they only supported it because they wanted to make profit off of their businesses. If the market for them increases throughout the country, typically up in the north , they are bound to have more profits in their business, which will get them more money, since they will be selling their stuff to more people.

-Julie

if i knew what was the answer i wouldve put it