Explanation: In 1899-1900, the Mundas in the region south of Ranchi rose under Birsa Munda. The Ulgulan was one of the most significant tribal uprisings in the period 1860-1920.

• The rebellion which began as a religious movement gathered political force to fight against introduction of feudal, zamindari tenures, and exploitation by money-lenders and forest contractors.
• The Mundas claimed Chhotanagpur as their area in 1879. British armed forces were then deployed. Birsa was captured and imprisoned.

Source: Spectrum Modern India