अधिगम संसाधनों के विकास में, कौन सा सिद्धांत यह सुनिश्चित करता है कि संसाधन विविध शिक्षार्थियों की आवश्यकताओं के उपयुक्त हों?

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?