1) The Indian Rebellion of 1857 was a major but ultimately unsuccessful uprising against British rule in India. It began as a mutiny of sepoys in the town of Meerut and then erupted into broader rebellions across northern and central India. 2) The rebellion was caused by growing resentment among Indians towards British policies of annexation, economic exploitation, social and religious interference, and racial discrimination and unequal treatment of Indian soldiers. The introduction of new gun cartridges also sparked religious tensions. 3) Key leaders of the rebellion included Mangal Pandey, the Rani of Jhansi, Nana Sahib, Tantya Tope, and the Mughal emperor Bahadur Shah