एक जनसंख्या पिरामिड जो आधार पर चौड़ा और शीर्ष पर तेजी से संकरा होता है, आमतौर पर किस जनसांख्यिकीय विशेषता को दर्शाता 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?