Solution:

Dharma Raja Karthika Thirunal Rama Varma was the Maharajah of Travancore from 1758 until his death in 1798. He succeeded his uncle Marthanda Varma, who is credited with the title of “maker of modern Travancore”. During his reign, Dharma Raja not only retained all the territories his predecessor had gained but administered the kingdom with success. He was addressed as Dharma Raja on account of his strict adherence to Dharma Sastra, the principles of justice by providing asylum to thousands of Hindus and Christians fleeing Malabar during the religious and military onslaught of Tipu Sultan.

The Maharajah died on 17 February 1798, at the age of 74, after a long reign that was prosperous, save for the invasion of the kingdom by Tipu Sultan. He had maintained the sovereignty of Travancore and protected it from destruction by the superior Mysore forces. He maintained the friendship cultivated with the British by his uncle Marthanda Varma. More importantly, he came to be known as Dharma Raja due to the asylum he provided to the thousands of people from Malabar fleeing to escape forced proselytization by Tipu Sultan. So pleased were these subjects of Malabar that many families of kings and nobles stayed back in Travancore.