The correct answer is 1, 2 and 4 only. Explanation & Key Takeaways: The 1857 Revolt: • The Indian Mutiny of 1857-59 was a widespread but ultimately unsuccessful rebellion against the rule of the British East India Company, which acted as a sovereign power on behalf of the British crown in India. • It was the first organised form of opposition to the British East India Company. • It began as a revolt of the British East India Company's army sepoys, but it eventually gained the support of the masses. • The revolt was dubbed the Sepoy Mutiny by British historians, the Indian Mutiny, the Great Rebellion by Indian historians, the Revolt of 1857, the Indian Insurgency, and the First War of Independence by Vinayak Damodar Savarkar. • Begum Hazrat Mahal, one of the ex-king of Awadh's begums, took command of the revolt in Lucknow. Lucknow was the state capital of Awadh. • Nana Saheb, Peshwa Baji Rao II's adopted son, led the revolt in Kanpur. • Rani Lakshmi Bai, twenty-two years old, led the rebels in Jhansi when the British refused to recognise her adopted son's claim to the throne of Jhansi. She fought valiantly against British forces but was ultimately defeated. • Kunwar Singh, a member of the royal house of Jagdispur in Bihar, led the revolt. • Chetram Jatav was a freedom fighter who took part in the 1857 Indian Rebellion. On May 26, 1857, he joined the mutiny in the Soro region of Eta district, North-Western Provinces (now Uttar Pradesh). • Therefore, Nana Saheb, Chetram Jatav and Begum Hazrat Mahal were contributors to the 1857 Revolt and Ashfaq Ullah Khan was related to the Kakori Conspiracy. Hence, Option 3 is correct. Related Concepts: Kakori Conspiracy: • The Kakori Train Action was a train robbery, committed by the revolutionaries of the Indian independence movement against the British Raj on August 9, 1925, in a village called Kakori near Lucknow. • This robbery was carried out by 10 revolutionaries including Hindustan Republican Association's revolutionary Ram Prasad Bismil, Ashfaq Ullah Khan, Rajendra Lahiri, Keshav Chakraborty, Mukundi Lal, Banwari Lal. • Significantly, freedom fighters Ram Prasad Bismil, Ashfaq Ullah Khan and Roshan Singh were hanged on December 19, 1927, for their involvement in the Kakori Conspiracy.