
Caste-origin Madhesh Hindu groups
The social structure of the caste-origin Madhesi Hindu groups is complex, reflecting four varna groups with distinct hierarchical structure within them. These various cultural groups belong to four distinct language groups: Maithili, Bajika, Bhojpuri, and Awadhi. In 2001 the CBS recorded 43 caste-origin Hindu groups in the Madhesh.[13] Caste prejudice is far less prevalent in cities nowadays, although nothing has changed in rural regions. As a result of occupational changes, increased education, their own efforts to emulate the upper castes and consolidation of political power, urban Dalits in the Terai have moved up in status. The National Report says, "Over the last 15-20 years, six groups, namely kath baniya, Rajbhar, Dhanuk, Sudi, Kalwar and Teli have socially upgraded their status from the water unacceptable to the water acceptable community within the Tarai origin Hindu caste groups."[14][15]
Source:- https://en.wikipedia.org/wiki/Caste_system_in_Nepal