Which of the following statements about the impact of the Santhal Rebellion (1855-56) are correct?
1. The rebellion was triggered by the heavy taxes levied by the British.
2. The rebellion led to the creation of the Santhal Pargana, which was given special status.
3. The British completely suppressed the rebellion by the end of 1856.
4. The rebellion was primarily led by the Santhal tribes and their leaders like Sidhu and Kanhu.