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What were the main causes of the Indian Rebellion of 1857?

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Illustration of De Kantzow defending the treasury at Mainpuri during the Indian Rebellion of 1857, showing a British officer confronting armed sepoys inside a building as tensions rise during the uprising. — Indian Rebellion of 1857 Indian sepoys (soldiers) corner a British officer amid their attack on a treasury in Mainpuri, Uttar Pradesh.

The Indian Rebellion of 1857 was a complex uprising fueled by deep-seated political, social, and military grievances against the British East India Company.

Military Causes

The immediate catalyst was the introduction of the Enfield rifle. Soldiers (sepoys) believed the cartridges were greased with pig and cow lard, which was deeply offensive to Muslims and Hindus. While the extent of this practice is debated, the suspicion reflected broader distrust. Additionally, the General Service Enlistment Act of 1856, which required overseas service, challenged the caste sensibilities of the Bengal army.123

Political and Economic Factors

Political resentment grew due to Lord Dalhousie’s doctrine of lapse, which allowed the British to annex states lacking a direct heir, such as Jhansi and Nagpur. Furthermore, British land-revenue settlements caused significant economic dislocation among the landholding classes.43

Social and Cultural Tensions

Many Indians feared the British were attempting to undermine traditional society through Westernization, including educational reforms and the introduction of technologies like the telegraph. Interventions in customs—such as the prohibition of sati—and the presence of Christian missionaries further fueled suspicion and unrest among the population.3