जम्मू और कश्मीर में स्थित वूलर झील मुख्य रूप से किस नदी द्वारा पोषित होती है?

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?