 Complete the following phrase:  Ballabgarh, is a large town and a tehsil subdistrict in Faridabad district of Haryana, India, and is part of the National Capital Region. The town was founded by Raja Balram Singh, in 1739, who also built the Nahar Singh Mahal palace in the same year. Raja Nahar Singh 18231858 was the last king of the princely state, he was executed for taking part in the 