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:
taxes
Explanation:
the Shays Rebellion was an uprising due to unfair taxes from the new US government. the colonies had just been freed from unfair taxes, so having the new government place unfair taxes upset them.