Answer : 2. "राजस्थान "
Explanation :

1. A report by the National Monuments Authority (NMA) has announced the designation of Mangarh Hill Peak in Rajasthan as a national monument in honour of 1500 Bhil tribal freedom fighters.

2. The hill, located on the Gujarat-Rajasthan border, is the site of a tribal rebellion where more than 1500 Bhil tribal freedom fighters were killed in the year 1913.