What is the conflict between Walter and Mama in A Raisin in the Sun?

and Mama disagree about
what to do with the insurance money that the Younger family will inherit. Walter wants to open a
liquor store, while Mama is totally opposed to the idea. Mama wants to use the money buy her
family a larger house in a different neighborhood.

Their conflict involves
not only what they will do with the insurance money, but also their different belief systems.
Walter pessimistically believes that the only way to achieve one's dreams is to prove one's
material wellbeing. In Act I, Mama says, "Once upon a time freedom used to be lifenow its
money. I guess the world really do change." Walter replies to her, "Noit was always
money, Mama. We just didnt know about it." Mama believes that her life's goal is to achieve
greater freedoms as an African-American woman, as she still remembers when her community was
subject to lynching, and she wants to achieve greater freedom and a better chance for her family
by moving to a house that they own. Walter concentrates on the material aspects of the American
Dream until the end of the play, when he realizes his pride and freedom are worth more than
money.