The historic agreement that guaranteed civil rights and liberties in England following the Magna Carta in 1215 was the Great Charter itself. The Magna Carta was a significant turning point in limiting the powers of the monarchy and establishing the principle that no one, not even the king, is above the law. It introduced concepts such as due process and the right to a fair trial, laying the groundwork for modern legal systems. Although initially focused on the barons' grievances, its principles gradually extended to broader civil rights, influencing later democratic documents, including the United States Constitution and the Bill of Rights.