Original sentence: Since Doaba consists the largest population of Chamar, there has recently been seeing modernisation in terms of caste discrimination and the so called 'low castes' are advancing.This is seen as a problem by a few people of higher castes who lay their mentality in medieval India.the main reason for rising resentment towards so called lower castes is the reverse discrimination being suffered by so called upper castes
Edited sentence: Since Doaba consists the largest population of Chamar caste with around 40% of the population of Doaba