Workers were drafted, so they had to join the war and leave or quit their jobs. People also volunteered to serve, and so people who didn't get drafted or join, took their places.
Answer:
B
Explanation:
Egocentrism
The process by which a speaker seeks to create a bond with listeners by emphasizing common values, goals, and experiences
Exploring the frontier, he did a lot of exploring in his time, and is most known for it