Which statement best describes the reason why the Soviet Union blockaded West Berlin in 1948?

After the Western powers introduced a new currency in their zones of Germany, the Soviet Union blocked road, rail, and canal access to West Berlin. The blockade was meant to pressure the Western powers to leave the city and strengthen Soviet influence in the region. So the best choice is that the Soviets wanted to expand their area of control in Eastern Europe; they were not trying to extend the Marshall Plan or make Berlin their capital.

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