Phyisically the GDR, politically it was caused by the division of Germany by introducing a different currency in the Western Sectors of Germany (including West-Berlin despite being under the control of 4 and not three powers) and the decision of the western allies not to crash down Germany (Morgenthau-Plan) but to build it up as a political wall against the soviet dominated east Europe.
Since Western currency could buy any shop in the East-Berlin empty and due to the Socialist policy to pay similar wages to high-qualified workers ( MDs, engineers etc.) and lower qualified workers, it became an economical problem to loose high-qualified staff to the Wester sectors. Also counter revolutions have been tried in the East sector when there was no wall - e.g. 17th June 1953.
obama did
The fall of the Berlin Wall
Berlin was the city divided by the Berlin Wall.
The Berlin Wall was built in Germany in August of 1961. The Berlin Wall was built to separate East Germany and East Berlin from West Berlin. The Berlin Wall was destroyed in 1990 which allowed for unification of West and East Berlin.
The Berlin Wall was put up in 1961 and torn down in 1989.
The fall of the Berlin wall -APEX
The Berlin Airlift was in '62 when the wall went up.
I have no idea why the Berlin Wall was erected in 1965. I can tell you that the Berlin Wall they erected in 1961 was put up to keep East Germany's intellectuals from leaving for West Berlin in the middle of the night.
because the wall was in the city Berlin
The fall of the Berlin Wall
Berlin was the city divided by the Berlin Wall.
West Germany
Berlin Wall
They called the Berlin Wall "The Wall of Shame."
The Berlin wall
The Berlin Wall was built in Germany in August of 1961. The Berlin Wall was built to separate East Germany and East Berlin from West Berlin. The Berlin Wall was destroyed in 1990 which allowed for unification of West and East Berlin.
The Berlin Wall surrounded West Berlin. Therefore... Inside the Berlin Wall: West Berlin Outside the Berlin Wall: The two closest cities were Potsdam to the west, and East Berlin to the east.
The fall of the Berlin wall -APEX