What did the census counts of 1920 and 1930 show about the shifting population in the United States?
Links[1] https://course-notes.org/forum/social_science/us_history/question_about_the_roaring_20s#comment-1075510 [2] https://course-notes.org/forum/social_science/us_history/question_about_the_roaring_20s [3] https://course-notes.org/user/65612