Answer: Western Allies wanted to strengthen Germany so that it would not fall under Soviet control. To effectively rebuild the nation, it was also necessary to create economic independence. Therefore, using funding approved by the Marshall Plan, the Western Allies developed industries in West Germany. They also held on tightly to control over Berlin by using airlifts to supply food during a blockade of the city.
Explanation: the Berlin Airlift happened in 1949. The reason it happened is that the Russians had cut off access from the Allied zones of occupation in West Germany to West Berlin, which was in the Russian zone (what became East Germany). So the Allies had to either surrender West Berlin or they had to supply it by air.