Jazz permeated practically every facet of American society throughout the 1920s. Everything from fashion and poetry to the Civil Rights Movement was influenced by it. Jazz influenced poetry as well, with jazz poetry developing as a new form throughout the era. Jazz also had an impact on film, where it can be seen in movies like Chicago-on-DVD and The Great White Hope. And finally, jazz played an integral role in helping America emerge from its economic slump by providing much-needed relief for the unemployed and impoverished. American history would have been completely different if not for the fact that jazz is such a unique and influential style of music. Before jazz, most American musicians were exposed to traditional European music, which tended to focus on solo performances. But jazz introduced group dynamics into American music, leading to many new genres being born including swing, blues, rock 'n' roll, and hip hop. Jazz has had a huge influence on American culture, especially during times of social change. As an urban music style, it helped drive African-Americans out onto city streets en masse to dance to its lively beat. This is why historians say jazz is responsible for bringing about the birth of modern America.