Question

a summary on the lesson when people rebel 1857 and after

Answer 1

here is a short summary

Answer 2

The Revolt of 1857 was one of the first wars of Indian independence against the British. This revolt can aptly be termed the first war of Indian independence against the British. Kings, peasants, tribals, landlords and we sepoys, all were dissatisfied with the British rule.
The start of the revolt was on the 29th of March, 1857, when Mangal Pandey, attacked his officers after he stopped using the greased cartridges. The attack by Mangal Pandey is considered one of the first acts of what came to be known as the Great Rebellion or the Sepoy Mutiny.
The sepoys wanted an end to the British rule and make Bahadur Shah Zafar their leader. In Delhi, sepoys killed many British officers, confiscated their ammunition and set their buildings on fire. A week after the British were evicted from Delhi, a wave of mutinies began in different parts of the country. More and more regiments rebelled and joined other troops at nodal places like Kanpur, Delhi and Lucknow.
Near Kanpur, Nana Saheb and in Lucknow Begum Hazrat Mahal, contributed a lot to the uprising. In Jhansi, Rani Lakshmibai, Tantia Tope and the sepoys together fought against the British. The revolt scared the British and shook the very foundation of their rule in India.