निम्नलिखित में से किसने पुरुषों और महिलाओं के बीच सामाजिक अंतर की आलोचना करते हुए 'स्त्रीपुरुषतुलना' नामक पुस्तक प्रकाशित की थी?

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?