जैविक जीवाश्मों से प्राप्त होने वाले ईंधन लगभग विशेष रूप से किस प्रकार की चट्टानों में संरक्षित पाए जाते हैं?

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?