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 Tamil political parties. They exerted pressure on the Indian government to intercede with the Sri Lankan government on behalf of the Sri Lankan Tamilians. However, LTTE lost much of its support from Tamil Nadu following the assassination of Rajiv Gandhi on 21 May 1991 by an operative from Sri Lanka for the former prime minister's role in sending Indian peacekeepers to Sri Lanka to disarm the LTTE. The east coast of Tamil Nadu was one of the areas affected by the Indian Ocean earthquake of 2004, during which almost 8000 people died in the disaster. The sixth most populous state