The Magna Carta, signed in 1215, is significant for its role in the development of constitutional rights. It established the principle that everyone, including the king, was subject to the law, thereby limiting arbitrary power. This charter laid the groundwork for later developments in legal systems, influencing constitutional frameworks across the world. Key concepts such as due process and the right to a fair trial emerged from its tenets, becoming fundamental in democratic societies. The Magna Carta's legacy continues to resonate, symbolizing the fight for individual rights and the accountability of rulers in governance.