Which style of American folk musical performance became immensely popular in the mid-nineteenth century?

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Minstrel shows, which featured white performers in blackface caricaturing African American music and culture, became immensely popular in the mid-nineteenth century. Despite their racist and derogatory nature, they influenced the development of many American musical genres, including ragtime, jazz, and blues.

Which Style of American Folk Musical Performance Became Immensely Popular