A particular form of American Evangelicalism developed in the 1920s to combat the secular culture after World War I, during the Roaring Twenties with its jazz age Gatsby morality.  From 1890-1920 over 20,000,000 people, mostly Roman Catholic Europeans, immigrated into the major American cities.  These new immigrants brought an end to the Victorian morals with their gambling and their bootlegging alcohol drinking during the Prohibition era.  The League of Nations and the growth of international communism were other factors.  Most fundamentalists were against the scriptural criticism of Protestant liberalism and the various other modernism trends.  They feared losing their world, because others were aggressively posing a threat to their traditions.  This was an apocalyptic view of history, where the past was great, the present cloudy and the future assured.