The United States and Germany carried extensive trades under the leadership of Stalin that led to the achievement of the economic development.
During the period of the rule of Stalin, high amount of economic developments were achieved in the Soviet Union after the end of the World War I.
This was possible primarily due to the trade allies made by Joseph Stalin with the United States of America during the period as such.
Hence, option C perfectly describes the economic development achieved under the leadership of Stalin in the Soviet Union.
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