The Santhal Rebellion, which took place in the mid-19th century, was led by two brothers, Sidhu and Kanhu Murmu, not Sidhu Manjhi as previously stated.The Santhal Rebellion, also known as the Santhal Hool or Santhal Revolt, was a significant tribal uprising in India, led by the Santhal community. The Santhals were a tribal group primarily concentrated in the region that is now Jharkhand, West Bengal, and Bihar. Sidhu and Kanhu Murmu, along with their followers, were key leaders of this rebellion. They revolted against the exploitative land revenue system, oppressive practices of landlords and moneylenders, and the British administration. The Santhals rebelled to assert their rights and preserve their way of life.

So, the correct option is [4].