The caused the united states to enter world war i.

revolution in russia
assassination of archduke ferdinand
german attack on belgium
telegram and sinking of american ships

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.

the answer is aggresion hope this and mark me as brainiest and add me as friend