Final answer:
The result of the 1920 presidential election can be largely attributed to public disillusionment following World War I, leading to a landslide victory for Warren G. Harding, who promised a return to 'normalcy'.
Step-by-step explanation:
The presidential election of 1920 may be attributed predominantly to public disillusionment after World War I. The nation had faced a litany of challenges including the flu pandemic, economic struggles, and social unrest. As the election drew closer, Americans signaled their desire for a return to 'normalcy' and their weariness of Progressive reforms and international engagement. This sentiment contributed to Warren G. Harding's landslide victory, as he promised to reduce government intervention, lower taxes, and scale back on Progressivism.