 Following communal riots between Hindus and Muslims in the Sindh province of the newly created Pakistan from Bombay Presidency, over 100,000 Sindhi Hindu refugees from Pakistan were relocated in the military camps five kilometres from Kalyan in the Bombay metropolitan region.It was converted into a township in 1949, and named Ulhasnagar by the then Governor-General of India, C. Rajagopalachari.In 1947, Congress party activists established the Rashtriya Mazdoor Mill Sangh (RMMS), with a claimed membership of 32,000, to ensure a strong political base in the textile industry.