किस मनोवैज्ञानिक का मानना था कि सभी प्रकार के संवेग मूल प्रवृत्तियों (basic instincts) से उत्पन्न होते 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?