After world war two what was the soviet attempt to control berlin by not allowing the allied countries to provide supplies to the city?

The Berlin Blockade (24 June 1948 – 12 May 1949.1) was one of the first major international crises of the Cold War. During the multinational occupation of post–World War II Germany, the Soviet Union blocked the Western Allies' railway, road, and canal access to the sectors of Berlin under Western control.

is this question from a book? ?

a memoir is the correct answer