आधिकारिक भूमि उपयोग आंकड़ों के अनुसार, भारत में 'बंजर भूमि' का सबसे बड़ा हिस्सा किस राज्य 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?