निम्नलिखित में से कौन सी पर्वत श्रृंखलाएं उत्तर-पश्चिमी सीमाओं पर स्थित हैं, जो भारतीय उपमहाद्वीप को शेष एशिया से अलग करती 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?