Explanation:

- The Sepoy Mutiny, also known as the First War of Indian Independence, began in Meerut.

- Meerut: The revolt started here on May 10, 1857, when Indian soldiers, or sepoys, rebelled against the British East India Company's rule.

- Champaran: This was a site of the Champaran Satyagraha led by Mahatma Gandhi in 1917, significant for the Indian independence movement, but unrelated to the Sepoy Mutiny.

- Rajkot: Played no active role in the 1857 mutiny and is not associated with its beginning.

- Bareilly: Although involved in the 1857 uprising, it was not where the revolt began.