बिहार के मैदानी भागों में मुख्य रूप से किस प्रकार का अपवाह तंत्र (ड्रेनेज पैटर्न) पाया जाता 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?