Formation of Districts in Tamilnadu: Madras State was formed from the Madras Presidency of British province after Indian Independence. After August 1947 Madras State was formed. The Madras state was renamed as Tamil Nadu on 14 January 1969 by Chief Minister C.N.Annadurai. After state reorganizations in 1953 and 1956, Madras State was divided into 13 districts: Chingleput, Coimbatore, Ka...