वर्ष 1974 में बिहार आंदोलन (जिसे जेपी आंदोलन भी कहा जाता है) का नेतृत्व किसने 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?