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Jazz became popular because it was an original art form that was created by African Americans, giving them a strong sense of identity and pride. It was also very different from the European musical styles that were dominant at the time, making it unique and captivating. The lively rhythms and improvisational nature of jazz made it a form of entertainment that appealed to a wide audience, and it was also a way for people to express themselves and experience freedom during a time of great social and political change. Furthermore, the availability of recorded music and radio broadcasts in the 1920s helped to spread jazz to a larger audience, making it a global sensation.