The civil war between King John came to an end when he put his seal on the final draft of Magna Carta or The Great Charter.
The Magna Carta Libertatum, which is often shortened as Magna Carta, is a royal charter of rights which was agreed upon by King John of England at Runnymede, near Windsor, on 15 June.
The great charter was very instrumental because it made the rebellious barons renew their oath of allegiance to the King and hence ending the immediate threat of civil war.
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