The Magna Carta introduced the idea of writing human rights into law.
The most known principle of the Magna Carta was that the monarchy had agreed to limit their power, that they were not above the law and couldn't "bully" everyone else below them. Although this was not entirely effective, it was a turning point.
The Magna Carta is the origin of some points for Bills of Rights in many modern day countries. (A Bill of Right is a list of rights granted to a state's citizens.)
The Magna Carta introduced the idea of Representative democracy. With the increase of taxes in England, many Englishmen started to rebel by promoting "No taxation without representation".
