ANSWER:
the Tenth Amendment
STEP-BY-STEP EXPLANATION:
Tenth Amendment. The Tenth Amendment was part of the Bill of Rights that was added to the Constitution on December 15, 1791. This amendment states that any power not specifically given to the federal government by the Constitution belongs to the States and the people.
Tenth Amendment - U.S. Constitution
The powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people.
The powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people.