The answer is because the road was not a part of any scheme
of interstate commerce.
Jackson banned the bill on the grounds that federal funding
of intrastate projects of this nature was undemocratic. He professed that such
bills dishonored the code that the federal government should not be convoluted
in local economic affairs. Jackson also pointed out that backing for these
kinds of projects delayed with giving off the national debt.
The correct answer is:
1)When there was more food productions tat meant there wouldn't be a lot of workers
2)Most farmlands were turned into roads
3)Changes in materiel
Hope this helps