The popularization of which psychologist's ideas encouraged the new morality of the 1920s?

Sigmund Freud

Alice Paul

W. E. B. Du Bois

Margaret Sanger

Answer: Sigmund Freud

Explanation: The popularization of Sigmund Freud 's ideas encouraged the new morality of the 1920s. The new morality of the Roaring 20s was influenced by Freud's ideas. They influenced gender, race, and sexuality. According to these new ideas, all individuals were free and equal, regardless of race, or gender. In the 20s women were granted the right to vote. There were many women attending universities. There were some improvements in racial equality for African-Americans. There was also a new vision of women sexuality.