कैरोलिना मारिन, जिन्होंने लगातार घुटने की चोटों के कारण अपनी सेवानिवृत्ति की घोषणा की, किस खेल की एक प्रमुख खिलाड़ी हैं?

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?