The significance of the Magna Carta, signed in 1215, lies in its establishment of the principle that everyone, including the king, is subject to the law. This document was a response to King John’s tyrannical rule and aimed to limit his power while ensuring certain rights for the barons, landowners, and, eventually, common people. The Magna Carta introduced concepts that influenced modern democratic governance, including due process and the idea of a council of nobles to advise the king. Over time, it laid the groundwork for constitutional law and inspired later democratic charters, signifying a pivotal moment in the development of legal rights.