Answer:
because it was "one of the deadliest conflicts"
Explanation:
"Also called The Great War, World War I was one of the deadliest conflicts in history, and set the stage for another world war just 20 years later. It was known as “The Great War”—a land, air and sea conflict so terrible, it left over 8 million military personnel and 6.6 million civilians dead."
Deeply and Barely are the adverbs. You can search for it on google.
I believe the answer is literary criticism.<span />
