Because their heir to the throne was killed by a Serb.
Austria-Hungary and Serbia.
USA, Austria, Germany, Britain, France,
it was forced to fight against the other countries
Austria Hungary did not become one nation after World War 1.
There was no Austria-Hungary after WWI it was broken up after the first world war
Nothing, they weren't really involved, but Germany invaded them, Chekoslovakia, Ugoslavia, Poland and a few others. So Austria was invaded by Nazi Germany.
History tells us that July 28, 1914 is the day in which Austria-Hungry entered in World War 1.
no not at all they were not involved in the first world war
Austria-Hungary.
Austria-Hungary
no
1914