What musical style was a major influence on all popular forms of music in the 20th century?

Jazz

Explanation:

    Arisen between the late 19th and early 20th centuries in New Orleans in the United States, Jazz can be defined as a musical style that values improvisation, swing and nonlinear rhythms. Another feature of this genre is the fact that it has its genesis in North American denial music, especially the Blues. It originated mainly from an African-American religious heritage that directly influenced the musical culture of that people. While slavery had not yet been completely abolished in the United States, afro-descendents gathered, often motivated by religious events, to celebrate singing and dancing.

    As for the origin of the term that gives name to this musical style, it is known that the word "Jazz" was already used as slang among Americans even before the emergence of the musical genre.

    The combination of these rhythms created by Afro-descendants with the influence of those of white music, resulted in the emergence of various rhythms and styles such as Blues, Ragtime and Spirituals that were transformed and combined giving rise and making room for Jazz. .

    Around the years 1897 and 1917 Jazz expanded in New Orleans, a city in the state of Louisiana, which at the time was a city proper for the emergence and formation of this musical style because it concentrated ethnic and cultural diversity. Although only after 1920 did Jazz become part of the culture of the American elites and influence their music. It was from this moment that Jazz reached international levels, consecrated worldwide.