Which statements about American cities during the 1960s are true? Choose all answers that are correct.

a. Many young blacks in inner cities were filled with rage and turned to violence to vent their frustration.

b. Serious poverty and unemployment resulted from millions of southern blacks moving to northern cities.

c. Segregation and discrimination were just as bad, or worse, in northern cities as in the South.

d. Poor whites in northern cities felt a sense of unity with southern blacks who moved into their neighborhoods.