What term was used to describe those left deeply disillusioned by world war 1 by the writer gertrude stein

Lost Generation

Explanation:

World War I was called the Great War and had more than 9 million deaths. Gertrude Stein, an American novelist that lived in that period, created the term “lost generation” to refer to the young persons that lacked the purpose or drive because of the profound disillusionment that they felt by living through the war in their 20s or 30s.