थार मरुस्थल को मुख्य रूप से सिंचित करने वाली इंदिरा गांधी नहर निम्नलिखित में से कहाँ से निकलती है?

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?