Final answer:
The United States and its allies provided supplies to West Berlin for about two years to overcome the Berlin blockade.
Step-by-step explanation:
The United States and its allies provided supplies to West Berlin to overcome the Berlin blockade for about two years, from June 1948 to May 1949. During this time, the Soviet Union imposed the blockade on West Berlin, cutting off all land and water access to the city. In response, the U.S. and its allies organized the Berlin Airlift, which involved flying in supplies to West Berlin. This massive airlift operation helped sustain West Berlin and eventually forced the Soviet Union to lift the blockade.
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