USA HISTORY

Detailed explanation-1: -The American, British and French sectors would form West Berlin and the Soviet sector became East Berlin. The division of Germany and the nature of its occupation had been confirmed by the Allied leaders at the Potsdam Conference, held between 17 July and 2 August 1945.

Detailed explanation-2: -In response to the Soviet blockade of land routes into West Berlin, the United States begins a massive airlift of food, water, and medicine to the citizens of the besieged city. For nearly a year, supplies from American planes sustained the over 2 million people in West Berlin.

Detailed explanation-3: -West Berlin, the western half of the German city of Berlin (q.v.), which until the reunification of the German state in 1990 was treated as a city and Land (state) of the Federal Republic of Germany (West Germany), though it was not constitutionally part of that nation.

Detailed explanation-4: -The German Democratic Republic (GDR), German: Deutsche Demokratische Republik (DDR), often known in English as East Germany, existed from 1949 to 1990. It covered the area of the present-day German states of Mecklenburg-Vorpommern, Brandenburg, Berlin (excluding West Berlin), Sachsen, Sachsen-Anhalt, and Thüringen.