From 1938-1945 Austria was a part of Germany and of course fought as a part of Germany in World War 2.
yes
Switzerland was neither in the Axis or the Allies during World War 2. Switzerland wanted to stay completely neutral. And to stay neutral, they would shot any planes that belonged to the Allies and Axis Powers that flew over Switzerland,
They just didn't pick a side to fight for.
Italy entered WWI in 1915 on the side of the Entente (Allies).
by not going into conflict with britian or any other country they did try to stay neutral
Great Britain fought against Austria-Hungary and Germany. Italy was going to join the Triple Alliance before the war but decided to stay neutral.
U.S. stayed neutral for most of the war they only fought for one year and ended the war
Yes they did.
Since the Second World War, whereas Austria was part of the "Third Reich"/"Greater German Reich" the nation wants to stay neutral, which won't be guaranteed if they were part of NATO. But Austria is criticised for working together with NATO and hence, for actually not being objective
yes
The U.S. wanted to stay neutral and let this be Europe's war.
The U.S. had a close relationship with Great Britain, and the war interfered with trade.