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.
the best definition for empire is an area or political unit in which formerly independent states are under the control of one ruler. Hope it helped
Answer:
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The answer is true. It caused heavy conflict in Europe.