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  the city is divided into the soviet sector in the east and i the west was the U.S, British, and French sector.
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  Berlin is divided into two different currency zones.
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  In July 1946 Germany was formally divided between the allies.
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  special passport and permission were required to travel between east and west Berlin by fall of 1946
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  soviet disallowed supplies and good from entering west berlin
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  It keeps Berlin provided with food and fuel.
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  United States, Canada, and the western European countries sign the north Atlantic treaty organization (NATO) in Washington.
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  Border between wast and west Germany and between east Germany and west Berlin.
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  east German borders were closed not allowing west through in 1952.
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  Building workers in east Berlin riot over working conditions. Red army steps in to stop the riot.
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  the Berlin wall was created to prevent east Berlin from escaping to the west. The wall became a symbol of the division of Europe.
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  Second wall is being built to stop escape.
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  He declares himself as a Berliner and vows to protect the people of West Berlin.
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  a heavier, larger and less penetrable wall was eradicated in 1965.
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  He urges the Soviet leader Mikhail Gorbachev to tear the wall down.
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  Thousands of people from east Germany leave and make there way to West Germany.
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  The guards stood back and thousands went over the wall to West Berlin.
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  east and west Berliners began to dismantle the wall.
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  Brandenburg gate closed and was formally opened in December 1989.
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  there was no more east and west Germany because they were reunified.