Question

Why were austria's borders smaller after world war i than before the war?

Answer 1

The borders got smaller for a lot of countries at the end of the Great War but the reason for Austria Hungry was because they were the ones to start the war and so as a consequence the victors of the war divided up the Austro Hungarian Empire thus reducing borders.

Answer 2

Austria was no longer part of the large Austro-Hungarian empire when that empire collapsed after the war