When was the Bill of Rights ratified?

The Bill of Rights was ratified on December 15, 1791. This set of ten amendments to the United States Constitution was introduced to ensure specific freedoms and rights for individuals and to limit the government's power in various areas. The inclusion of these amendments addressed the concerns raised during the ratification debates of the Constitution, particularly the need to protect individual liberties such as freedom of speech, religion, and the right to a fair trial.

The other dates listed do not correspond to the ratification of the Bill of Rights. July 4, 1776, marks the adoption of the Declaration of Independence. January 1, 1800, does not have a significant connection to the Bill of Rights. April 1, 1789, is before the ratification and pertains to the first Congress meeting, but it was not when the Bill of Rights was finalized. Thus, December 15, 1791, is indeed the correct date when the Bill of Rights became part of the Constitution, ensuring those fundamental rights for American citizens.