I believe the Tenth Amendment--which states that all powers not given to the federal government are kept by the states--was the most important. During the 18th century, the Anti-Federalists feared that due to the Constitution of 1787, the federal government would abuse their power, essentially violating the rights of the people. James Madison initially sided with the Anti-Federalists, but after being persuaded otherwise by Thomas Jefferson, the Bill of Rights was developed to prevent the issue of overpower. Moreover, the overall purpose of the Bill of Rights is to limit the power of the federal government, and the amendment that represents these Rights as a whole is the Tenth Amendment. Considering that America was a recently created
