औरंगजेब ने अपने शासनकाल में मुख्य रूप से दक्कन के प्रांतों में किस भू-राजस्व प्रणाली को व्यापक रूप से अपनाया था?

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?