How did the fall of France in 1940 affect American public opinion on entering World War Two?

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It led to a decrease in support for helping the Allied powers.
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It increased many Americans' desire to remain completely neutral with no aid to either side.
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It made many Americans want to join the war to protect democratic nations from German occupation.
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It caused many Americans to overwhelmingly support joining the war to assist the Axis powers.

1 answer

The fall of France in 1940 had a significant impact on American public opinion regarding involvement in World War II. It primarily increased many Americans' desire to support the Allies and heightened the sense of urgency around the threat posed by Nazi Germany. While there was still a strong isolationist sentiment among segments of the population wanting to maintain neutrality, the quick and dramatic collapse of France under German occupation alarmed many and contributed to a shift towards favoring aid for the Allied powers. Thus, the most accurate statement would be that it made many Americans want to support democratic nations against the Axis powers, rather than joining the war outright at that point.