If the centres of four identical mutually touching circles M, N, O, and P are joined sequentially (M to N, N to O, O to P, and P back to M), then the lines joining them form the sides of a:

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?