The importance of the Magna Carta, signed in 1215, lies in its role in limiting the power of the monarchy in England. This historic document established the principle that the king was subject to the law, thereby protecting certain individual rights against arbitrary rule. By asserting the right to a fair trial and due process, it laid the groundwork for the development of constitutional law. The Magna Carta influenced various democratic movements and constitutional frameworks worldwide, symbolizing the enduring fight for liberty and the rule of law. Its legacy continues to resonate in legal systems today.