'प्रेयरी' घास-भूमि का विस्तार मुख्य रूप से किस देश/क्षेत्र में है?

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?