Daman-i-Koh, in the foothills of Rajmahal hills, was declared to be the land of which of the following tribes?

Santhals

The correct answer is Option (3) → Santhals

Daman-i-Koh is a popular viewpoint and garden situated in the Margalla Hills National Park in Islamabad, Pakistan. It is located on the north side of the city and provides a picturesque vantage point for observing the cityscape of Islamabad, as well as the Rawal Lake.

The term "Daman-i-Koh" translates to "Foot of the Mountain" in Persian. The viewpoint is situated on the lower hills of the Margalla range, making it a favored spot for both locals and tourists to enjoy scenic views of the surrounding landscape. The area is often visited for recreational activities, picnics, and hiking. Regarding the Rajmahal hills and tribes, there might be a confusion in the context or information provided earlier. If you have specific questions about the Rajmahal hills or tribes associated with them, please provide more details, and I'll do my best to assist you.

So, the correct option is [3].