Answer:
King John of England signed a document in 1215 that limited his own powers as monarch. This document was the Magna Carta.
Step-by-step explanation:
The Magna Carta is the charter on freedoms and justice that King John Lackland of England signed on 15 June 1215. This was enforced by the English nobility because they thought the king was abusing his power. The treaty was signed in a meadow near Runnymede, Windsor.
The Magna Carta restricted the king's power and guaranteed greater political freedoms for the nobility. The Church was protected from the domination of the princes and was free to fill vacancies. Legislation and justice were reformed and the behavior of royal officials was brought under control.