Magna Carta
It's a nicely-written article, but I'm not sure how much of it is from the DWU. Needs to be rewritten, restricting itself more narrowly to what's in The King's Demons
These problems might be so great that the article's factual accuracy has been compromised. Talk about it here or check the revision history or Manual of Style for more information.
Magna Carta (Latin: great charter) was the first document in British history to place legal limits on the powers of the King.
In 1215, the nobles of England, chafing under King John's excessive taxation and arbitrary justice, would only renew their oaths of fealty if John agreed to their demands. John was forced to agree, and all parties signed the Magna Carta in June of that year. It provided, among other things, that a free man could not be imprisoned or have his property seized without due process, and that he was entitled to a quick trial before his peers.
As an important document in the history of jurisprudence, and its signing a pivotal moment in human history, the Master sought to prevent its signing, thus altering the course of history, but was prevented from doing so by the Doctor. (DW: The King's Demons)