Charter of liberties sealed by King John at Runnymede…

Charter of liberties sealed by King John at Runnymede, beside the River Thames, in June 1215, after rebellious barons forced him to negotiate. Written in Latin, it limited royal power by declaring that no free man could be imprisoned without the lawful judgement of his peers. Quickly annulled by Pope Innocent III, it was reissued several times and later inspired the United States Constitution and modern ideas of human rights.

The answer in 10 letters