It was initially created as a result of World War 1, separating those territories from Austria and Hungary.
Yes.
Czechoslovakia & Yugoslavia
Poland was established Czechoslovakia was established
In 1948, shortly after World War Two ended.
Hitler occupied Czechoslovakia.
The Nazis invaded Czechoslovakia.
Yes.
Taken early on in the war by the fascist Nazis.
Czechoslovakia & Yugoslavia
Germany.
Czechoslovakia
It was occupied by Germany on 15 March 1939.
Czechoslovakia, Yugoslavia and Poland
Czechoslovakia
The Sudetenland
Poland, Czechoslovakia, Yugoslavia.
Poland was established Czechoslovakia was established