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  WWII ended. It divided into 4 sectors: the American, British, French in the West.
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  Currency reform in Berlin, Berlin is divided into two different currency zones
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  The one and only Berlin Blockade Begins
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  The Berlin Blockade ended
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  They are only in charge of the West Germany
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  The Berlin Airlift Begins
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  It ended.
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  Border between East and West Germany and between East Germany and West Berlin is closed. Only the border between East and West Berlin is still opened
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  Leaving East Germany without permission is forbidden and violations are prosecuted with prison up to three years
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  The Berlin sectorial border between East and West Berlin is closed, barriers are built
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  The gate closed down.
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  All crossing points are closed for West Berlin citizens
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  President J. F. Kennedy visits Berlin and says: "Ich bin ein Berliner." ("I am a Berliner.")
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  Four Power's Agreement over Berlin
 visiting becomes easier for West Berliners
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  President Ronald Reagan visits Berlin and urges Soviet leader Mikhail Gorbachev to tear down the Berlin Wall.
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  President J. F. Kennedy visits Berlin and says: "Ich bin ein Berliner." ("I am a Berliner.")
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  Germany reunited
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  Hungarian government opens border for East German refugees
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  Berlin wall opened
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  Brandenburg opened again