Greek literature focused mainly on mythology, science, math, and philosophy. Many famous philosophical stories came from the Greeks and Romans. For example plato and Socrates. There was also a lot of important scientific discovery’s in that time! Such as Aristotle who founded zoology!
So most of Greek literature was focused on three things, education, religion, and philosophy.
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The correct answer is <span>C. Gas masks were introduced to counteract the use of chlorine gas
This was the first time in warfare that someone used gas as a weapon in war and it was useful but the ally soldiers found ways to adapt and introduced new types of gas masks which weren't like the modern ones and didn't block the gas a lot but were certainly helpful. Such masks were made of cloth and had chemicals on them to prevent gas from entering.</span>
25 is the answer you want
Diocletian and Constantine give to life to the late roman empire with New government rules and and new people and military system with more advanced technology.