What was Damin-i Koh in Rajmahal area ?

What was Damin-i Koh in Rajmahal area ?

A large area of land demarcated and declared to be the land of the Santhals
The land of the Paharias cultivated exclusively for paddy
The British territory marked for their military camp
The land earmarked for locating settled agriculturists
This question was previously asked in
UPSC NDA-2 – 2020
Damin-i Koh (literally, ‘skirt of the hills’) was an area in the Rajmahal hills of present-day Jharkhand that was demarcated by the British in the 1830s. It was specifically declared as the land of the Santhals, who were encouraged to settle there, clear the forests, and practice settled agriculture in exchange for paying revenue.
Damin-i Koh was an administrative measure by the British East India Company to expand settled agriculture and revenue collection, primarily by settling Santhals in the Rajmahal hills.
This policy led to the displacement of the Paharias, the original inhabitants of the hills, and also brought the Santhals under the exploitation of moneylenders and zamindars who entered the area. These factors were major causes of the Santhal rebellion (Hul) in 1855-56.