How did postwar disillusionment lead people to pacifism

The suffering, misery and death of million of soldiers led to several Americans developing strong anti-war sentiments, and a rejection of several Wilsonian ideals. They felt that the USA had been drawn into the war by merchants,greedy bankers and British propaganda and nobody seemed to question what would have happened had Germany won the war, beyond the quest to avoid war at all costs.

The answer will be a