What is one power that belongs to the states under the Constitution?

The power that belongs to the states under the Constitution involves providing schooling and education, which falls under the authority of state governments. This is because education is not specifically mentioned as a power of the federal government in the Constitution, thus leaving it to the states to manage. Each state can establish its own school systems, determine educational standards, and oversee public education policy.

The other options listed pertain to powers that are exclusively granted to the federal government. For instance, declaring war and creating an army are powers that the Constitution explicitly reserves for Congress, thus not allowing states to engage in these activities independently. Similarly, printing money is a function assigned to the federal government alone, specifically the U.S. Treasury and the Federal Reserve, prohibiting individual states from issuing their own currency. This structure maintains a clear division of powers and responsibilities between state and federal governments.