Final answer:
The 1920s was nicknamed the Jazz Age due to the burgeoning popularity of jazz music, and this period coincided with the cultural movement known as the Harlem Renaissance.
Step-by-step explanation:
The explosion in the popularity of jazz music in the 1920s gave this decade the nickname of the Jazz Age. The Jazz Age was also known as the "Roaring Twenties" and is characterized by the emergence and spread of jazz music from African American communities in places like New Orleans and Chicago, reaching a wider audience in New York and beyond. Jazz music, with its improvisational style and new rhythms, became a hallmark of the period. The decade also saw the Harlem Renaissance, a cultural movement involving a flourishing of African American art, music, and literature, centered in the Harlem neighborhood of New York City. Notable jazz artists like Duke Ellington and Cab Calloway performed at Harlem's famous Cotton Club, making substantial contributions to American music and culture.