The Great Gatsby is a 1925 novel written by American author F. Scott Fitzgerald that follows a cast of characters living in the fictional town of West and East Egg on prosperous Long Island in the summer of 1922. The story primarily concerns the young and mysterious millionaire Jay Gatsby and his quixotic passion and obsession for the beautiful former debutante Daisy Buchanan. The Great Gatsby explores themes of decadence, idealism, resistance to change, social upheaval, and excess, creating a portrait of the Jazz Age or the Roaring Twenties that has been described as a cautionary tale regarding the American Dream.

Set on the prosperous Long Island of 1922, The Great Gatsby provides a critical social history of America during the Roaring Twenties within its fictional narrative. That era, known for profound economic prosperity, the development of jazz music flapper culture, new technologies in communication (motion pictures, broadcast radio, recorded music) forging a genuine mass culture; and bootlegging, along with other criminal activity, is plausibly depicted in Fitzgerald's novel. Fitzgerald uses many of these societal developments of the 1920s that were to build Gatsby's stories from many of the simple details like automobiles to broader themes like Fitzgerald's discreet allusions to the organized crime culture which was the source of Gatsby's fortune. Fitzgerald depicts the garish society of the Roaring Twenties by placing the book's plotline within the historical context of the era.