What is the main ethnic group of the Indian state where the Centre for Studies in Social Sciences, Calcutta is located?
Centre for Studies in Social Sciences, Calcutta: Centre for Studies in Social Sciences, Calcutta (CSSSC) is a social science and humanities research and teaching institute in Kolkata, West Bengal, India. West Bengal:  The main ethnic group are the Bengalis, with Bengali Hindus forming the demographic majority.
the Bengalis