F. Scott Fitzgerald's novel "The Great Gatsby" explores the divide between the upper and lower classes in 1922 America, and the tensions that arise between them. The main character, Jay Gatsby, is a mysterious and wealthy man who is not accepted by the old-moneyed elite of East Egg, despite his efforts to ingratiate himself. This rejection is due to Gatsby's humble origins as a poor farmer's son, and his later rise to wealth through illegal means.
The upper class is represented by the residents of East Egg, who are characterized by their inherited wealth and sense of entitlement. They look down upon those who are not of their social class, such as Gatsby and the Buchanans' neighbor, Tom Buchanan. Tom is a wealthy and boorish man who is disdainful of those he considers beneath him, including his mistress, the working-class Myrtle Wilson.
The lower class is represented by the residents of West Egg, who are nouveau riche, or newly wealthy. They are seen as crass and lacking in taste by the old-moneyed elite. Gatsby, who lives in West Egg, is a prime example of this. Despite his wealth and lavish parties, he is not accepted by the upper class because of his lack of breeding and connection to the criminal underworld.
The class divide is also evident in the relationship between the main character, Nick Carraway, and the other characters. Nick, who is from the Midwest and has modest means, is an outsider in the world of the wealthy East Egg residents. He is drawn to Gatsby, with whom he shares a common background, and is disgusted by the selfish and shallow behavior of the upper class.
Fitzgerald uses the character of Gatsby to critique the corrupting influence of wealth and the hollow nature of the upper class. Despite his efforts to fit in, Gatsby is ultimately rejected by the society he yearns to be a part of. His tragic end serves as a cautionary tale about the dangers of chasing after a dream that is based on superficial values.
In conclusion, "The Great Gatsby" is a commentary on the divide between the upper and lower classes in America, and the corrupting influence of wealth. Fitzgerald uses the character of Gatsby to explore the theme of class and the dangers of chasing after a dream that is based on shallow values.