Tamil Nadu is one of the 28 states of India. It lies on the eastern coast of the southern Indian Peninsula bordered by Puducherry (Pondicherry), Kerala, Karnataka and Andhra Pradesh. Tamil Nadu is bound by the Eastern Ghats in the north, the Nilgiri, the Anamalai Hills, and Palakkad on the west, Bay of Bengal in the east, Gulf of Mannar, Palk Strait in the south east and Indian Ocean in the south. It is the eleventh largest state in India by area (about the size of Greece) and the sixth most populous state.
Karnataka is a state in the southern part of India. It was created on November 1, 1956, with the passing of the States Reorganisation Act. Originally known as the State of Mysore, it was renamed Karnataka in 1973.