Final answer:
The Berlin Blockade initiated by the USSR in 1948 lasted for eleven months and led to the famous Berlin Airlift.
Explanation:
The Berlin Blockade initiated by the USSR in 1948 lasted for eleven months. It began in response to the Western nations combining their occupation zones in preparation for German unification. The United States conducted the famous 'Berlin Airlift' to provide much-needed supplies to West Berlin.
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