What are some some particular attitudes and traditions the author wants to change in A Raisin in the Sun?I would greatly appreciate if someone...

In A Raisin in the Sun, Lorraine
Hansberry challenges the materialistic view of happiness that is often associated with
the American Dream.  Hansberry is careful in her crafting of the story--the Younger
family receives a large sum of money not from winning a prize, but from the insurance
settlement from the death of the late Mr. Younger.  In the play, Lena Younger even
comments that the check represents what someone thinks Mr. Younger's life is worth.  As
a result, the money is symbolic of Mr. Younger's life, hard work, and dreams for his
family.  When Walter loses the money in the liquor store scheme, the family sees the
loss as their dreams going down the drain.  Lena has spent a portion of the money on a
house, but the house does not represent material ownership--it represents the family's
independence and ability to stick together as a unit during hard times.  At the end of
the play, the family is happy not because they have a new house, but because they are
able to stay together and see to the benefit of their family as a
whole.