Madras State was a state of India which was in existence during the mid-20th century. The state came into existence on 26 January 1950 when the Constitution of India was adopted and included the present-day Tamil Nadu, Kerala and parts of neighbouring states of Andhra Pradesh and Karnataka. Andhra state was separated in 1953 and the state was further re-organized when states were redrawn linguistically in 1956. On 14 January 1969, the state was renamed as Tamil Nadu.