किसी संगठन में कौन सा विभाग यह सुनिश्चित करने के लिए जिम्मेदार है कि केवल उचित रूप से अधिकृत खरीदारी की जाए जो व्यवसाय के लिए आवश्यक हो?

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?