What new scientific discoveries came about in the 1920’s and 1930’s

Vitamins C and E, penicillin - the first of the modern antibiotics, innovations in immunization, and the discovery of insulin which made the treatment of diabetes possible.

Explanation:

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religion played a major role in the american revolution by offering a moral sanction for opposition to the british--an assurance to the average american that revolution was justified in the sight of god. the revolution strengthened millennialist strains in american.