साइमन कमीशन द्वारा पहली बार किस वर्ष 'अनुसूचित जाति' (Scheduled Caste) नामकरण प्रस्तावित किया गया था?

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?