Answer :
They were labeled "lost" due to their propensity to act mindlessly, even recklessly, frequently focusing on the hedonistic accumulation of personal wealth. In literature, the term also refers to a group of well-known American authors and poets.
The famous core of the Lost Generation writers was a group of American expatriates who lived in Paris, France, during the 1920s. Hemingway was one of them, having driven ambulances in Italy during World War I. In Paris, he met advisor Gertrude Stein and other friends who had a significant impact on his work.
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