test (1) effet (1) demande (offre et demande) (1) ligne (1) States (1) Civic leaders (1) Thought and thinking (1) Struggle (1) Social scientists (1) Social justice (1) Social change (1) Segregation (1) Public policy (1) Prejudices (1) Political planning (1) Harmony (1) Examinations (1) Evidence (1) Equality (1) Cohesion (1) States (1) Relations (1) Harmony (1)