Answer:
1) the Great War
2) imperialism
3) The Balkans region
4) the Battle of Verdun
5) Vladimir Lenin
6) Triple Alliance
7) Zimmerman telegram
8) It forced Germany to split its forces to send soldiers to the Eastern Front and fight Russia. This resulted in a much longer war. Germany also began using more submarines in warfare.
9) New technologies like the machine gun, poison gas, tanks, and submarines were used for the first time in WWI. Trench warfare was also a new way of fighting. The scale of the war was also novel in terms of the number of people involved and the geographic scope.
Step-by-step explanation:
PENN FOSTER
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