Kingdom Morang after his name and rose to power. The old name of Biratnagar was Gograha Bazaar. The ruins of temples, palaces and ponds are scattered in a vast area to the south of the current city, in Vedhyari, Buddhanagar. The preservation of this heritage has been a major problem citing the encroachment by newcomers into the city. The town was named Biratnagar in 1919 (1976 BS) by Keshar Shamsher Rana after the ruins of a palace, thought to be of King Virat (not proved), and other objects of historical importance were found. Kingdom of Virata mentioned in Mahabharata is however believed to be Viratnagar, located in present-day Rajasthan. King Virata was the king of the Matsya Kingdom, in whose court the Pandavas spent a year in concealment during their exile. According to the Markandeya Purana, the famous seven Kirata kingdoms during the Mahabharat time were Aswakut or Kabul, Kulya or Kulu Valley, Matsya or North Bihar Paundra or Bengal, Sumer or Assam, Malak or Mlek or Lohit, Kinner Kirat or Garhwal and Nepal. In those days, the Kirat people were ruling all the lands from Himalayan Mountains to the sea shores of the Bay of Bengal. The name may have been derived to refer to as a huge city. In Nepali, Birat () means "Huge" and Nagar () means "City". On 4 March 1947, the first anti-Rana movement in Nepal started in Biratnagar at the Biratnagar jute mills under the leadership of Girija Prasad Koirala and B. P. Koirala. This sparked a countrywide anti-Rana demonstration that eventually led to the abolishment of Rana rule in Nepal. Climate The highest temperature ever recorded in Biratnagar was on the 14 April 1992, while the lowest temperature ever recorded was in December 1970 and January 1971. Demography Languages According to 2011 CBS census data, 39% of the population in the city spoke Nepali, 38% Maithili, 5% Urdu, 2% Rajastani, and 15% spoke other languages as their first language. Ethnic groups Biratnagar is very diverse city, The largest ethnic group is Madheshi consisting of (Brahmins, Yadavs and Baisyas like Teli, Suri, Haluwai, Rauniyars, Kalwars etc.), who make 31% of the population. Second largest ethnic groups is Khas consisting (Hill Brahmin, Chhetri, kami, sarki, damai, thakuri, sanyasi/dasnami) make 30% of the population, similarly Muslim population is (8%). Other groups in Biratnagar include the Newar (5%), Kewat (4%), Marwari (2%) and others various ethnic groups