Final answer:
F. Scott Fitzgerald called the 1920s 'The Jazz Age,' reflecting the era's festive culture and his life which encompassed the decadence and ultimate financial struggles of the time.
Step-by-step explanation:
F. Scott Fitzgerald referred to the 1920s as The Jazz Age, which he vividly depicted in his works like Tales of the Jazz Age and The Great Gatsby. The term embodies the era's spirit of revelry, music, and social change, highlighting a period of prosperity and the production of popular entertainment. Fitzgerald's personal life mirrored the decade's excesses, as he and his wife Zelda lived a profligate lifestyle that ultimately exhausted their finances. In his essay, "The Crack-Up," Fitzgerald recounts his experiences and regrets during the 1920s, revealing nostalgic dreams and the overwhelming complexities of life. His portrayal of the era reflects both the carefree nature of the booming 1920s and the looming disillusionment that would be realized during the Great Depression.