Final answer:
King John was the ruler of England during the 12th century, and the nobles were upset with him due to his actions to finance the war against France and his abuse of power. The discontent among the nobles led to the signing of the Magna Carta.
Step-by-step explanation:
In the legend of Robin Hood, King John was the ruler of England during the period of the 12th century. The nobles, who were wealthy men, were upset with him due to his actions to finance the war against France, particularly in his attempts to regain control of the lost territory of Normandy. King John imposed heavy court fees and inheritance taxes, which caused discontent among the nobility and led to a rebellion against the king.
The nobles were also concerned about King John's abuse of power and his disregard for their rights. They saw him as a tyrant who did not respect the rule of law. This discontent culminated in the signing of the Magna Carta in 1215, which laid out a set of rights and limitations on the king's power. The principles of the Magna Carta, which emphasized justice and liberty, became the foundation of future concepts of law and governance in England.