Nepali is the country of unity in diversity. Not only the landscape, culture but people too. There is many several caste people live in same place with harmony. In the past there are only Tharu tribes people live in chitwan but these days many other cast people also migrate to chitwan and live together with tharu people. Tharu are the biggest ethnic group of terai. They are Hindu but have their own culture, own language and living style that is different with other cast people. Now there are other cast people, like mongoloid, newar, Brahmin and many more.