When were the first formal legal rights established in England?

The establishment of the first formal legal rights in England is marked by the signing of the Magna Carta in 1215. This seminal document was created as a result of conflicts between King John and his barons, who sought to limit the king's arbitrary power and protect their rights. The Magna Carta laid the groundwork for many principles of fair legal process and justice, including the idea that everyone, including the monarch, is subject to the law. Its legacy includes the development of constitutional law and the enhancement of individual rights in subsequent years.

The other years listed do not reflect the first formal legal rights established in England. For instance, 1610 does not correspond to a significant legal development in the context of formal rights, 1776 is primarily known for the American Declaration of Independence rather than English law, and 1829 marks the formation of the Metropolitan Police in London, which while significant, does not relate to the establishment of legal rights. Thus, 1215 stands out as a pivotal moment in the recognition of legal rights within the English legal system.