निम्नलिखित परमाणु-सक्षम देशों में से किसने आधिकारिक तौर पर 'नो फर्स्ट यूज़' (पहले उपयोग नहीं) की परमाणु नीति घोषित की 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?