A teacher helps her learners understand errors in their speech and pronunciation by citing some of the errors without mentioning who made them. She does this once a week. What strategy is she using to improve their skills?

The 'Drain of Wealth' theory was propounded by which Indian nationalist leader?

Which event is considered the turning point in Mahatma Gandhi's leadership in the Indian independence movement?

Which African leader is known for his non-violent opposition to colonial rule?