The correct response is:
It gave the federal government power to regulate the economy.
During James Monroe's presidency, the Supreme Court, particularly under Chief Justice John Marshall, issued several important rulings that expanded federal power, notably in the area of economic regulation and the supremacy of federal law over state law. One key case was McCulloch v. Maryland (1819), which upheld the federal government's authority to establish a national bank and reinforced the idea of implied powers under the Necessary and Proper Clause. This helped solidify the federal government's role in economic regulation.