The fall of Feudalism was caused because of three main things.
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One reason that caused the fall of Feudalism were Political causes, the Magna Carta.
The Magna Carta limited the power of the king, imposed special taxes, and made more common laws.
Another thing that caused the fall of Feudalism was the Bubonic Plague.
The plague killed the majority of the nobility, and caused instability socially and economically.
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The rats were the ones that carried the diseases so the people that worked the fields died.
Another thing that caused the decline of feudalism was the Hundred year war.
The hundred year war was a conflict that lasted for a long time between England and France.
After all the things that happened for example the Magna carta, the bubonic plague, and the hundred year war a lot of people died and the social structure was messed up. But England continued to thrive as they won the war.