jungle estates)[2] was a district formed by British possessions and some independent chiefdoms lying between Birbhum, Burdwan, Midnapore[3] and the hilly country of Chota Nagpur in what is now the Indian state of West Bengal.

[5][citation needed] The Chuar Rebellion was a series of uprisings by the tribal communities in the Jungle Mahals region against the oppressive policies of the British East India Company.

The British referred to the rebels as "Chuars," meaning "barbaric," due to their resistance to land revenue collection.

In response to the unrest, the British reorganized the region, establishing the Jungle Mahals district and implementing stricter administrative control.

[11][12] By Regulation XIII of 1833, the district of Jungle Mahals was broken up, and a new administrative unit known as the South-West Frontier Agency was formed.