What document was adopted two years after the constitution went into effect?

The Bill of Rights was adopted two years after the U.S. Constitution went into effect. Ratified on December 15, 1791, it consists of the first ten amendments to the Constitution, which were designed to protect individual liberties and rights against government infringement. The adoption of the Bill of Rights addressed concerns raised by Anti-Federalists during the ratification debate and aimed to ensure a balance between federal authority and personal freedoms.