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.
I believe the answer is the first one
one main reason why it started is because of different views on slavery and whether or not it should be legal also the election of abraham lincoln as president. hope this helped
Answer:
The Civil War caused a decrease in cotton production
Explanation:
