The Mughal emperor who led to the Revolt of 1857 was Bahadur Shah II. He was the last Mughal emperor and ruled from 1837 to 1858. The revolt, also known as the Indian Mutiny or the Sepoy Rebellion, began in May 1857 and was sparked by a combination of factors including religious tensions, economic grievances, and political dissatisfaction with British rule. The rebellion was primarily led by sepoys (Indian soldiers in the British East India Company army), but it also involved other groups such as landowners and nobles who opposed British control over India. The revolt was eventually suppressed by the British, leading to significant changes in the administration of India and the end of the Mughal dynasty.