Answer:
Woodrow Wilson signed the act creating the national park service.
Answer:
Mainly Trench Warfare was popularized by the use of new mechanized weapons such as Artillery, and also because of the mass victories in the east on germany's side, Russia used these as a form of slowing them down and to protect their troops, but often these trenches hurt these men by disease, starvation, etc.
Answer:
Democratic countries believed in popular elections, while communist countries did not.
Explanation:
Democratic countries believed in popular elections, while communist countries did not represents a difference between communist and democratic countries during the Cold War.
I believe that it would be the second option.
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Just going off what i learned from Age of Empires... The Bronze Age
