Explanation: Continued oppression of the Santhals, an agricultural people, who had fled to settle in the plains of the Rajmahal hills (Bihar) led to the Santhal rebellion against the zamindars.

• The moneylenders who had the support of the police among others had joined the zamindars to subject the peasants to oppressive exactions and dispossession of lands. The rebellion turned into an anti-British movement.
• Under Sidhu and Kanhu, two brothers, the Santhals proclaimed an end to Company rule, and declared the area between Bhagalpur and Rajmahal as autonomous. The rebellion was suppressed by 1856.

Source: Spectrum Modern India