1857 के विद्रोह के दौरान लखनऊ में विद्रोहियों और अंग्रेजों के बीच सबसे भीषण लड़ाई कहाँ हुई थी?

Consider the following statements regarding the Lucknow Residency during the Revolt of 1857: 1. The Lucknow Residency was the site of one of the longest and most famous sieges during the Revolt of 1857. 2. The siege of the Residency was brought to an end only by the forces led by Sir Colin Campbell, and no other relief column took part prior to it. Which of the statements given above is/are correct?

Under whose leadership was the revolt of 1857 started in Patna?