भारतीय राजनीति में किसके शासनकाल को लोकप्रिय रूप से 'एक-दल-प्रभुत्व वाली प्रणाली' के रूप में जाना 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?