Which is an example of federal supremacy? a. state banks must pay taxes to the more powerful federal government. b. the supreme court can decide whether a law or act is constitutional. c. congress has powers that are not specifically outlined in the constitution. d. a state is not allowed to tax federal money because federal law is superior.

D. A state is not allowed to tax federal money because federal law is superior

D. A state is not allowed to tax federal money because federal law is superior.

Explanation:

The federal supremacy or Supremacy Clause is a principle found in Article VI of the U.S. Constitution, which establishes that all federal laws are superior and therefore, in case of a conflict between federal and state laws, the federal law must prevail, this means that the scope of the state laws is limited by the federal's laws, and due to this principle, a state is not allowed to tax federal money.

it made them more prductive and efficent but with the change of polcies less and les got into the navy