The term was used by writer gertrude stein to describe those left deeply disillusioned by world war i. lost generationbaby boomerbeat generationtea party

Explanation:

Lost generation is the term used by the American writer and poet Gertrude Stein, to refer to those North American writers who fought in World War I and those who remained in Europe or those who returned after the end of the war.

Within this group were notable American writers who lived in Paris and other European cities from the end of the First World War in 1918, to the Great Depression in 1929, among which may be listed:

John Dos Passos, Erskine Caldwell, William Faulkner, Ernest Hemingway, John Steinbeck, Sherwood Anderson and Francis Scott Fitzgerald.

This generation was characterized by feeling lost after the war and disconnected from the current environment of the moment. They lived to the fullness of literature, alcohol, adventures, risk and were always anguished by the present, wanting to compress time and forget the horrors lived during war.

nativists tried to get rid of the immigrants as they thought they were going to ruin the u.s.  

d.summerains, the last one