The significance of the Magna Carta in the development of common law is considerable. Signed in 1215, it established the principle that everyone, including the king, was subject to the law. This landmark document served as a foundation for the development of individual rights and limited government power. It introduced concepts such as due process and the idea of a social contract, influencing legal systems in England and beyond. The Magna Carta's enduring legacy is its role in shaping constitutional law and democratic governance, inspiring future legal reforms and rights movements.