The "King of Ragtime" in Black history refers to Scott Joplin, a renowned African American composer and pianist who is considered one of the most influential figures in the development of ragtime music. Joplin's compositions, such as "Maple Leaf Rag" and "The Entertainer," helped popularize and define the ragtime genre, characterized by its syncopated rhythms and lively melodies.

Born in 1868 in Texas, Joplin honed his musical skills as a young man and eventually moved to St. Louis, Missouri, where he began composing and performing ragtime music in bars and clubs. His talent and innovative approach to music quickly garnered attention, and Joplin's ragtime compositions became immensely popular during the late 19th and early 20th centuries.

Despite facing racism and discrimination during his lifetime, Joplin's music transcended these barriers and continues to be celebrated for its creativity and influence on American music. In 1976, Joplin was posthumously awarded a Pulitzer Prize for his contributions to music, cementing his legacy as the "King of Ragtime" in Black history.