Hitler made a major mistake by making all military decisions by himself, without taking advice. His decision to invade the Soviet Union was a complete failure because Germany was not prepared and they had misjudged the Soviet Union’s defensive power.
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A large population of wealthy people
Marshall Plan
The Marshall Plan, also known as the European Recovery Program, was a U.S. program providing aid to Western Europe following the devastation of World War II. It was enacted in 1948 and provided more than $15 billion to help finance rebuilding efforts on the continent.