Most Americans supported isolationism. They didn't want to engage in another European war. Although this agreement didn't include sending troops to Europe, it involved sending 50 destroyers to UK, so the amount of help was rather major.
The "Destroyers for Bases" deal in 1940 received mixed reactions from Americans. While interventionists saw it as crucial support for Britain against Nazi Germany, isolationists criticized it as a step toward entering the war. Ultimately, it reflected a growing shift in public opinion towards supporting the Allies.
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