वह प्रथम भारतीय विद्वान कौन था, जिसने गणित को खगोल विज्ञान से एक पृथक विषय के रूप में स्थापित किया?

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?