दिल्ली के किस सुल्तान ने राजत्व का सिद्धांत प्रतिपादित करते हुए स्वयं को पृथ्वी पर ईश्वर का साया (जिल-ए-इलाही) कहा था?

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?