Nadu (lit. land of the Dravidians) during discussions of the partition of India. Post-Independence (1947–present) When India became independent in 1947, Madras presidency became Madras State, comprising present-day Tamil Nadu and coastal Andhra Pradesh, South Canara district of Karnataka, and parts of Kerala. The state was subsequently split up along linguistic lines. In 1969, Madras State was renamed Tamil Nadu, meaning "Tamil country". Geography Tamil Nadu covers an area of , and is the tenth-largest state in India. The bordering states are Kerala to the west, Karnataka to the north-west and Andhra Pradesh to the north. To the east is the Bay of Bengal and the state encircles the union territory of Puducherry. The southernmost tip of the Indian Peninsula is Kanyakumari which is the meeting point of the Arabian Sea, the Bay of Bengal, and the Indian Ocean. The western, southern, and the northwestern parts are hilly and rich in vegetation. The Western Ghats and the Eastern Ghats meet at the Nilgiri Hills. The Western Ghats traverse the entire western border with Kerala, effectively blocking much of the rain-bearing clouds of the south-west monsoon from entering the state. The eastern parts are fertile coastal plains and the northern parts are a mix of hills and plains. The central and the south-central regions are arid plains and receive less rainfall than the other regions. Tamil Nadu has the country's third-longest coastline at about . Pamban Island and a group of smaller limestone shoals make up the northern portion of Ram Setu, which was formerly a natural bridge linking India with Sri Lanka. Tamil Nadu's coastline bore the brunt of the 2004 Indian Ocean tsunami when it hit India, which caused 7,793 direct deaths in the state. Tamil Nadu falls mostly in a region of low seismic hazard with the exception of the western border areas that lie in a low to moderate hazard zone; as per the 2002 Bureau of Indian Standards (BIS) map, Tamil Nadu falls in Zones II and III. Historically, parts of this region have experienced seismic activity in the M5.0 range. Climate Tamil Nadu is mostly dependent on monsoon rains and thereby is prone to droughts when the monsoons fail. The climate of the state ranges from dry sub-humid to semi-arid. The state has two distinct periods of rainfall: South west monsoon from June to September, with strong southwest winds; North east monsoon from October to