Original sentence: As a member of the Indian History Congress, he supports secular historiography of India in the medieval and early modern periods.Communalists opposed historians such as Ram Sharan Sharma, Romila Thapar, Bipan Chandra, Arjun Dev and Chandra whose text books had long been used in schools.He is the son of Sir Sita Ram, a zamindar/educator/barrister/politician from Meerut.He was a Reader in History at Aligarh Muslim University, Aligarh before joining the newly established Centre for Historical Studies, Jawaharlal Nehru University, New Delhi as a professor and a co-founder.Satish Chandra is an Indian historian, whose main area of specialisation is medieval Indian History
Edited sentence: As a member of the Indian History Congress, he has been committed to the cause of championing secular historiography of India in the medieval and early modern periods.He is the son of Sir Sita Ram, an eminent zamindar/educationist/barrister/politician from Meerut.He was a Reader in History at Aligarh Muslim University, Aligarh before joining the newly established Centre for Historical Studies, Jawaharlal Nehru University, New Delhi as a Professor and a co-founder.Satish Chandra is an eminent Indian historian, whose main area of specialisation is medieval Indian History.The historians with impeccable academic credentials and international renown like Ram Sharan Sharma, Romila Thapar, Bipan Chandra, Satish Chandra and Arjun Dev whose text books had been prescribed in schools for a long time were under virulent attack from communalists