What was the American system

Was a three-pronged plan aimed at: Improving the economy of the United States. Introducing a protective Tariff to enable the nation to raise money from these taxes and at the same time protect the nation's goods from cheaper priced foreign items.

Textbook answer (I'm doing that rn)

The American system was a national economic plan put forth by senator Henry Clay of Kentucky and the Whig pays through the first half of the 19th century.