कौन सी ऐतिहासिक नहर सतलुज नदी पर रोपड़ हेडवर्क्स से निकलती है और मध्य पंजाब को व्यापक रूप से पानी की आपूर्ति करती 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?