Final answer:
The decade known as the "Roaring Twenties" is the 1920s, characterized by economic growth, social changes, the Jazz Age, and ultimately leading to the Great Depression.
Step-by-step explanation:
The decade referred to as being "roaring" is the 1920s. The '20s were characterized by dramatic economic growth, significant changes in social norms, a flourishing of the arts in movements such as the Harlem Renaissance, and innovations in technology and entertainment. This period also witnessed the proliferation of jazz music, earning it the nickname the Jazz Age.
Although there were underlying economic problems, the 1920s were marked by a post-World War I sense of relief and a turn towards modernity that was reflected in the popular culture, the behavior of the younger generation, and the booming stock market. Unfortunately, the excesses and unchecked optimism of the decade led to the Great Depression, bringing the roar to a sudden stop.