The etymology of the word “Jazz” originates on the west coast and migrates east to meet up with the new music as musicians emigrate north to Chicago and New York audiences. Jazz is truly improvisational and very much American in origin.

https://archive.org/details/howirishinvented0000cass

Jazz, Rock, Gospel, Blues, Funk, R&B, Disco, Hip Hop, and even House all originated in Black America. Queer spaces in America also were also crucial in the development of House, Disco, and even Hip Hop