How did technology affect the way battles were fought? Answer . Example or examples

What battle strategies did the eastern and western allies adopt? Answer.
Example or examples

How did World War I affect public perception of the war from then on?
Answer .
Example or examples

Technology affected the way that World War I was fought because it pretty much caused the infamous trench warfare to happen. The machine gun, especially, made it very easy for defenders to kill large numbers of soldiers who were attacking them. ... So, the machine gun caused defensive, trench warfare to be necessary

Explanation:

the answer for 3 is b and the answer for 4 is d