Explanation:

Anandamath is a Bengali fiction, written by Bankim Chandra Chatterjee and published in 1882. Set in the background of the Sannyasi Rebellion in the late 18th century, it is considered one of the most important novels in the history of Bengali and Indian literature.
Sanyasi Uprising (Bengal, 1770-1820s) The Hindu Naga and Giri armed Sanyasis once formed a part of the armies of the Nawabs of Awadh and Bengal, and also of the Maratha and Rajput chiefs. The immediate cause of the rebellion was the restrictions imposed on the pilgrims visiting the holy places. The Sanyasis raided the English factories and collected contributions from the towns, leading to a series of conflicts between the large bands of Sanyasis and the British forces. After nearly half –a-century long strife, the Sanyasi Uprising ended in the second quarter of the nineteenth century.