What are the differences between the utopic and dystopic versions of the American dream that we can find in the work of American literature?

Research Topic: The American Dream in Literature.

What are the differences between the utopic and dystopic versions of the American dream that we can find in the work of American literature?
Focus of research question: comparison
Answers to research question:
A. utopic dreams of America are represented in the idea of longing for a better life
1. pursuit of happiness.
2. economic wealth.
3. individual freedom.
B. dystopic reality of the American dream are represented in the idea of being controlled by an unreachable dream.