<human>:  Why did the Marshall Plan fail?
<bot>: The Marshall Plan was a plan to help rebuild Europe after World War II. It was a huge success. The Marshall Plan helped to rebuild Europe into a strong economic powerhouse. However, it did not help the Soviet Union. The Soviet Union was a major power in the world at the time and was a rival of the United States. The Soviets were not happy about the Marshall Plan and used it as an excuse to expand their influence in Europe.