Which innovation was a significant form of entertainment introduced in the 1920s?

The 1920s marked a transformative period in American entertainment, with motion pictures emerging as a significant innovation during this decade. The development of sound technology led to the creation of "talkies," or films with synchronized sound, which captivated audiences and revolutionized the film industry. This innovation not only changed the way films were produced and experienced but also established cinema as a dominant form of entertainment in American culture.

The influence of motion pictures extended beyond mere entertainment; it shaped social norms, provided a new medium for artistic expression, and became a powerful tool for influencing public opinion. The golden age of Hollywood began in this era, and major studios were established, creating the framework for the film industry that would flourish in the years to come.

In contrast, while television was developed in the 1920s, it didn't become a significant public entity until later, in the late 1940s and 1950s, when it reached households across America. Video games did not emerge until the mid-20th century, and the internet was yet to be conceptualized, making motion pictures the clear standout innovation of the 1920s in the context of entertainment.