Henry clay’s american system proposed improvements to transportation. how did these changes impact trade among regions of the united states?

Henry Clay's “American System” was an economic plan that consisted of three mutual parts: 1) tariffs to protect and promote US industry 2) the creation of a national bank to foster commerce 3) federal subsidies for roads, canals, and other internal improvements.

b. second continental congress

missouri compromise of 1820 which prohibited slavery