Answer:
A innovation in farming
Step-by-step explanation:
The Magna Carta was one of the reasons for the Decline of Feudalism because it limited the King’s power the strengthened the rights of nobles. This crushed the main characteristics of Feudalism that was the dominance of the king over others.
The Black Plague was also a reason because the disease killed millions, which affected the feudal system and food production.
The Crusades also helped to end feudalism because many people were forced to have long trips and many people went out and to Europe.