India
India is a federal union comprising 29 states and 7 union territories. All states, as well in addition to the union territories of Puducherry and the National Capital Territory of Delhi, have elected legislatures and governments following on the Westminster system of governance. The remaining five union territories are directly ruled by the centre through appointed administrators. In 1956, under the States Reorganisation Act, states were reorganised on a linguistic basis. Since then, their structure has remained largely unchanged. Each state or union territory is further divided into administrative districts. The districts are further divided into tehsils and ultimately into villages.
South India
South India is the area including the five Indian states of Andhra Pradesh, Karnataka, Kerala, Tamil Nadu and Telangana, as well as the three union territories of Lakshadweep, Andaman and Nicobar Islands and Puducherry, occupying 19% of India's area (). Covering the southern part of the peninsular Deccan Plateau, South India is bounded by the Bay of Bengal in the east, the Arabian Sea in the west and the Indian Ocean in the south. The geography of the region is diverse with two mountain ranges–the Western and Eastern Ghats, bordering the plateau heartland. Godavari, Krishna, Kaveri, Tungabhadra and Vaigai rivers are important non-perennial sources of water. Chennai, Bangalore, Hyderabad, Trivandrum, Coimbatore Visakhapatnam, Madurai and Kochi are the largest urban areas.