The correct answer is: B. Kangra
Trigarta was an ancient kingdom in the Indian subcontinent, located in the present-day Indian state of Himachal Pradesh. It was bounded by the Sutlej River to the north, the Beas River to the south, the Ravi River to the east, and the Pir Panjal Range to the west. The capital of Trigarta was at Nagarkot, which is now a town in the Kangra district of Himachal Pradesh.
Trigarta was a powerful kingdom in ancient times. It was ruled by a number of different dynasties, including the Trigartas, the Katochs, and the Chandellas. The kingdom was known for its wealth and its military power. It was also a center of learning and culture.
Trigarta declined in power in the 12th century. It was conquered by the Gurjara-Pratiharas and then by the Chauhans. In the 14th century, it was conquered by the Mughals. Trigarta ceased to exist as a kingdom in the 16th century.
The region of Kangra is believed to be the site of ancient Trigarta. The Kangra district is located in the central part of Himachal Pradesh. It is bordered by the Chamba district to the north, the Hamirpur district to the east, the Una district to the south, and the Solan district to the west. The Kangra district is the most populous district in Himachal Pradesh. It is also the most developed district in the state.
The Kangra district is home to a number of important historical and cultural sites. These include the Kangra Fort, the Naina Devi Temple, and the Chamunda Devi Temple. The Kangra Fort is one of the largest forts in India. It was built in the 11th century by the Katoch rulers. The Naina Devi Temple is a Hindu temple dedicated to the goddess Naina Devi. It is one of the most popular pilgrimage sites in Himachal Pradesh. The Chamunda Devi Temple is a Hindu temple dedicated to the goddess Chamunda. It is located on the top of a hill in the Kangra district.
The Kangra district is also home to a number of beautiful natural sites. These include the Kangra Valley, the Dhauladhar Range, and the Beas River. The Kangra Valley is a fertile valley located in the Kangra district. It is home to a number of villages and towns. The Dhauladhar Range is a mountain range located in the Kangra district. It is a popular tourist destination. The Beas River is a river that flows through the Kangra district. It is a major source of water for the district.