Answer:
The most important influence on 20th century music? African Americans and the musical culture they brought to this country – developed within the bonds of slavery.
Even before the 20th century began, blues music was evolving across the country out of the traditional African slave spirituals, work calls and chants. Of all the developing genres, the blues would be the most far-reaching, with its influence felt in everything from jazz to rock, country music to rhythm and blues, and classical music.
Step-by-step explanation:
When Dvorak came to America in 1892, the Pledge of Allegiance was new. So were Carnegie Hall, the game of basketball and Edison's wax cylinders. Classical music in America wasn't new — but it needed a reboot. Already a celebrated composer in Europe, Dvorak was hired to run the National Conservatory of Music in New York to help American composers find their own voices and shake off the European sound.