King John's reign was marked by treachery and tyranny, leading to the signing of the Magna Carta in 1215. His excessive taxation and abuse of power sparked a rebellion among his barons, who forced him to agree to the charter, which limited his authority and protected the rights of his subjects. However, John later reneged on his promise, leading to the First Barons' War, which ultimately resulted in his death in 1216. The Magna Carta's legacy remains significant, as it established the principle that even a king is subject to the law and laid the foundation for modern constitutional governance.
