The historical significance of the Bill of Rights in the United States lies in its role as a fundamental safeguard for individual liberties and rights. Ratified in 1791, the Bill of Rights comprises the first ten amendments to the U.S. Constitution, explicitly outlining protections for freedom of speech, religion, assembly, and the press, among other rights. Its introduction was crucial in addressing Anti-Federalist concerns about potential government overreach and the protection of personal freedoms. The Bill of Rights has since served as an essential reference for civil rights movements, influencing legal interpretations and the expansion of individual rights throughout American history.