Final answer:
The opposition to the proposed American System of internal improvements was a result of concerns about excessive government spending.
Step-by-step explanation:
The opposition to the proposed American System of internal improvements was a result of concerns about excessive government spending. The American System was a plan that aimed to develop the nation's economic capacity through federal support for roads, canals, and other transportation improvements. However, critics argued that the government should not be spending taxpayer money on such projects.