What profound effect did World War have on American society?

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the conflict heralded the rise of conscription, mass propaganda, the national security state and the FBI. It accelerated income tax and urbanisation and helped make America the pre-eminent economic and military power in the world

Explanation:

The World War 1 experience impacted hugely on U.S. culture, domestic politics and society. The war also resulted in an increased demand for weapons abroad. This led to increased profits and heightened productivity in the American steel industry. World War 1 ushered in an era of using chemical weapons.

the best description of postwar writers might be progressive.

following the war, writers showed a tendency to work on artistic or social matters rather than political themes. while postwar literature may not have been the greatest period of english literature, the themes provided excellent critics a high number of novels. such examples include anthony burgess, anthony powell and frank kermode, all of which can be placed under the progressive view.

north atlantic treaty organization.