Occupation zones after 1945. Berlin is the multinational area within the Soviet zone

The Berlin Blockade was from 24 June 1948 to 11 May 1949. It began when the Soviet Union blocked railway and road access by the three Western powers (the Americans, British, and French) to the Western-occupied sectors of Berlin. The blockade stopped after the Western powers used airplanes to airlift food and other things that people needed.