Book author by Martin Gilbert. My entry to this activity The first world War The First War of Independence, also known as the Sepoy Mutiny or the Indian Rebellion of 1857, was a widespread but ultimately unsuccessful uprising against British rule in India. The conflict was sparked by a combination of factors, including growing resentment towards British policies, economic exploitation, and the introduction of new rifle cartridges rumored to be greased with animal fat, which offended both Hindu and Muslim sepoys. Here's a more detailed look: Causes: Political: The British East India Company's policy of annexation, including the Doctrine of Lapse, led to the seizure of many Indian states and kingdoms, creating widespread discontent among rulers and nobles. Economic: British economic policies, such as heavy taxation and the destruction of local industries, impoverished many Indians and fueled resentment. Social and Religious: The British were perceived as interfering with Indian social and religious customs, including attempts to reform practices like Sati and child marriage. Military: The introduction of the Enfield rifle, with cartridges greased with animal fat, was the immediate trigger for the revolt. The rumor that the grease was made from pig and cow fat offended both Muslim and Hindu soldiers, who considered these animals sacred, leading to widespread mutiny among the sepoys.