• By the 1920s New York had become a major commercial and industrial city, making use of the latest advances in engineering.
• Immigration, including internal migration of African Americans from the South, made it a racially and culturally mixed city.
• John Dos Passos, in his novel Manhattan Transfer (1925), depicted New York as an impersonal machine-like city, with rootless people passing through it.
• F. Scott Fitzgerald focuses his novel on an individual who stands out from the mass society of the city.