In which decade did the modern American popular music industry begin to take shape?

• A. the 1890s
• B. the 1920s
• C. the 1940s
• D. the 1870s

Answer: (A)

The idea being tested is when the music industry in America first became a mass-market system. In the 1920s, the rise of phonograph records, established recording companies, and a nationwide distribution network transformed how music was produced, marketed, and consumed. This shift moved popular songs from primarily sheet music and live performances to widely distributed recordings that could reach listeners across the country, laying the foundation for the modern industry.

Earlier decades centered on publishing and live performance with limited mass reach, and by the 1940s the infrastructure was already built on the 1920s model. So the 1920s are the decade when the modern structure began to take shape.