1. What was Beneatha's family doing when George came in?
Beneatha was in Nigerian dress. Beneatha and Walter were dancing and singing Nigerian songs. They looked rather crazy, and Walter was quite drunk.
2. What are "assimilationist Negroes"?
"Someone who is willing to give up his own culture and submerge himself in the dominant, and in this case, oppressive culture."
3. What did Mama do with her money?
She bought (made a down payment on) a home.
4. What was Walter's reaction to Mama's purchase? Ruth's reaction?
Walter was very disappointed. Ruth was elated.