Answer:
C. using tariffs to promote domestic manufacturing
Step-by-step explanation:
The 4 main parts of the economic plan called the American System were:
1. imposing high tariffs to bolster (domestic) American industries
2. making public land prices high to increase federal revenue
3. creation of a national bank to stabilize the value of the US dollar
4. federally subsidizing "internal improvements" such as the building of roads, canals, etc.