The Magna Carta, often known as the Great Charter, is a pivotal document in the development of constitutional law. It was an important text agreed upon by King John of England and his barons in 1215, outlining key concepts that established the groundwork for modern constitutional rule. 

Here are some of the most important features of its significance:

Rights Protection: It enshrined essential rights for free men, including safeguards against arbitrary detention and unjust taxation. Individual rights were impacted by this concept in following legal advancements and the Universal Declaration of Human Rights.

Impact on Future Constitutions: The Magna Carta served as a model for future constitutional documents such as the United States Constitution and the Universal Declaration of Human Rights, proving its long-lasting influence on constitutional law.

Symbol of Liberty: The Magna Carta has become an icon of liberty and the battle for individual rights against repressive government over the years. It is still a source of inspiration for movements around the world campaigning for constitutionalism and human rights.

Restrictions on Royal Power: The Magna Carta was crucial in limiting the monarch's absolute power. It established the notion that the law applied to even the king, guaranteeing that rulers were not above the law. Today, constitutional monarchies and democracies are founded on this premise.

Fair Trial: The document introduced the principles of due process and a fair trial, ensuring that persons could not be detained without a valid and just method. These concepts are foundational to current legal systems.