'जैसे-जैसे लोग अधिक मितव्ययी होते जाते हैं, वे कुल मिलाकर उतना ही या उससे कम बचत कर पाते हैं।' यह कथन किस आर्थिक अवधारणा को संदर्भित करता 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?