What is one power of the federal government?

One important power of the federal government is the ability to print money. This authority is granted to the federal government by the Constitution, specifically to the U.S. Congress, which has the exclusive right to coin money and regulate its value. This power is essential for maintaining a stable economy and ensuring that the currency used in the nation is uniform and secure.

While collecting taxes is indeed a power of the federal government and serves as a critical aspect of its function, it is not unique to the federal level, as states also possess the authority to impose taxes. Providing education typically falls under state and local jurisdiction, not the federal government, although federal programs do play a role in educational funding. Setting marriage laws is primarily the responsibility of individual states, indicating that marriage laws are not governed by federal authority. This is why the ability to print money distinctly highlights a power that resides solely within the federal government, making it the correct answer.