What are the influences of eugenics in the U.S. in the 1920s?

What are the influences of eugenics in the U.S. in the 1920s?

(1) Eugenics was so popular in the U.S. in the 1920s that it became commonsensical. (2)It affected American politics, social sciences, medicine,public policy, aesthetic theory, literature and popular culture. (3)It influenced both white American writers and African American intellectuals.Eugenics in some form showed up in various writings between 1890 and 1940
【评分参考】本题共分三个采分点,(1)占1.5分,(2)占1.5分,(3)占2分;考生只要答出其中的大意即可,答题语言不要求一致。