वित्तीय वर्ष 2012-13 के दौरान भारत के आयात के सबसे बड़े स्रोत के रूप में किस देश ने पहला स्थान प्राप्त किया 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?