महात्मा गांधी दक्षिण अफ्रीका से स्थायी रूप से किस वर्ष भारत लौटे थे?

The Dandi March, also known as the Salt Satyagraha, was led by which influential leader?

Which act formally granted independence to India, marking the end of British rule?

Who was the key figure in establishing the Indian National Congress?