The answer is the city of Berlin
It was Berlin the capital of Germany.
Berlin.
It wasn't divided before the war. The division happened at the end of the war.
Korea was divided in 1945, and remained divided in 1953, and is still divided today. Vietnam was divided in 1954 at the end of the French Indochina War (aka: 1st Indochina War).
Because it was a divided city with various sectors under the control of different countries and located in an area controlled only by the Soviet Union.
BERLIN
The Cold War.
Berlin
Berlin
It was Berlin the capital of Germany.
Berlin, Germany
Berlin
Berlin.
Berlin, Germany
Berlin
It caused Greece to be divided.
The Peloponnesian Wars