Explanation:

In 1805, Kangra Raja Sansar Chand attacked the hill State of Bilaspur (Kahlur), which called in the dangerous aid of the Gurkhas, already masters of the wide tract between the Gogra and the Sutlej. The Gurkhas responded by crossing the latter river and attacking the Katochs at Mahal Mori, in May, 1806. The invaders gained a complete victory, overran a large part of the hill country of Kangra, and kept up a constant warfare with the Rajput chieftains who still retained the remainder. The people fled as refugees to the plains, while the minor princes aggravated the general disorder by acts of anarchy on their own account. The horrors of the Gurkha invasion still burn in the memories of the people. The country ran with blood, not a blade of cultivation was to be seen, and grass grew and tigers whelped in the streets of the deserted towns. At length, after three years of anarchy, Sansar Chand determined to invoke the assistance of the Sikhs. Ranjit Singh, always ready to seize upon every opportunity for aggression, entered Kangra and gave battle to the Gurkhas in August, 1809.

After a long and furious contest, the Maharaja was successful, and the Gurkhas abandoned their conquests beyond the Sutlej.