World War I changed USA deeply, both positively and negatively. But for the question proposed lets focus in the negative sides of the postwar period:
1) Inflation was high and companies and enterprises started to reduce wages and discharge workers to keep down operating costs.
2) It created an Anti-German feeling in American society. Propaganda in several media reinforced this idea, making Germans and German culture subject of hate.
3) During the war between hundreds of thousands African Americans moved north to the cities in the 'Great Migration'. The massive penetration of people in the cities led to horrible conditions and problems of Urbanization in America.
4) The country became intolerant of foreigners, with anti-immigration laws slowing immigration.
5) Eugenics movements -Darwinian ideas on “natural” selection led to an enhanced desire to develop the American genetic heritage within artificial means, such as forced sterilization and anti-miscegenation laws.
Harlem renaissance was an African American cultural movement that grew in the 1920s and had Harlem in New York City as its metaphorical capital. It is considered the most influential period in African American literary history. The Harlem Renaissance was an artistic flowering of the “New Negro” movement as its participants celebrated their African heritage and embraced self-expression, rejecting long-standing—and often degrading—stereotypes.
Langston Hughes and Zora Neale Hurston worked in presenting the common African American person objectively as an individual simply existing in the world in Wallace Thurman’s short-lived journal, Fire!! They fought against portraying only “cultured” and “high-class” African Americans who reflected the standards of white society. In doing so, they discoursed for young artists who chose to pursue their art for its own principle. Louis Armstrong had a significant impact on Jazz. He brought a soloist's art into the composite nature of Jazz and was one of the most important musicians when we talk about Harlem Renaissance. He is also famous for his unique voice. Duke Ellington was also a Jazz artist and played with a big band in different popular clubs. He composed thousands of songs and is credited as one of the key figures in the history and development of jazz music
