F. Scott Fitzgerald made substantial contributions to the American literary canon through his vivid portrayal of the Jazz Age and the complexities of American society in his works like "The Great Gatsby." His writing explored themes of wealth, class, and the American Dream, reflecting the disillusionment of young Americans in the 1920s. Fitzgerald's lyrical prose and character development have made his narratives enduring classics, offering critical insights into the moral decay of society. His exploration of existential themes paved the way for modernist literature, solidifying his place as a key figure in American arts.