What is the main reason southerners might have supported henry clay’s american system? the american system promised to their industries obtain raw materials. the american system promised to improve overseas trade with europe. the american system promised to transport crops to northern markets. the american system promised to benefit the southern economy the most.

The correct answer is: "The American System promised to help transport crops to northern markets."

The American System was proposed by Henry Clay during the first half of the 19th century. It was an economic planification which had three main pillars: setting tariffs to protect the US national industries, the creation of a national bank for supporting commerce and the use of federal subsidies to build cannals, roads and to foster transportation in the general with the ultimate goal of enabling the creation of profitable markets for agricultural products.

Clay believed that the Southern states would support the plan because of this latter proposition, as connecting their cotton supplies with Northern markets, would make their agricultural exploitations more profitable.  But in reality, Southern states did not really support the proposal,

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the reform movements that arose during the antebellum period in america focused on specific issues: temperance, abolishing imprisonment for debt, pacifism, antislavery, abolishing capital punishment, amelioration of prison conditions (with prison's purpose reconceived as rehabilitation rather than punishment), the humane treatment of animals, the humane and just treatment of native americans, the establishment of public institutions for the care of the destitute, orphans, blind, and mentally ill, the establishment of public schools, the abolition of tobacco use, vegetarianism, health reform, homeopathic medicine, woman's rights (including, at first, especially the establishment of a woman's right to own property apart from her husband and her right to sue for divorce), and the amelioration of labor conditions (including higher pay, the right to form unions, the right to strike, and the demand for limits on the number of work hours, and safe working conditions).

explanation:

i believe it was the shinto