Economy of Tamil Nadu projects under operation in the public-private partnership (PPP) model. It is currently working on upgrading its road network, though the pace of work is considered slow. Tamil Nadu has a well-developed rail network as part of Southern Railway. Headquartered at Chennai, the present Southern Railway network extends over a large area of India's Southern Peninsula, covering the states of Tamil Nadu, Kerala, Puducherry, minor portions of Karnataka and Andhra Pradesh. Tamil Nadu has a total railway track length of 6,693 km and there are 690 railway stations in the state. The system connects it with most major cities in India.
History of Tamil Nadu the wave of public support stemming from the independence struggle, formed the first post-independence government in Tamil Nadu and continued to govern until 1967. In 1965 and 1968, DMK led widespread anti-Hindi agitations in the state against the plans of the Union Government to introduce Hindi in the state schools. Affirmative action in employment and educational institutions were pioneered in Tamil Nadu based on the demands of the Dravidian movement. The leadership of the Dravidian movement had very capable authors and literati in Annadurai and Karunanidhi, who assiduously utilised the popular media of stage plays and movies to spread its