Karnataka or Karntaka is one of the four southern states of India. Before 1973, the state was known as Mysore state, as it was formed out of the former Kingdom of Mysore in 1950, and enlarged in 1956 to include the Kannada-speaking regions of neighboring states. Karnataka's capital Bangalore is the only city in the state with a population of more than 1 million. Other major cities include Mysore, Mangalore, Hubli-Dharwad, Bellary and Belgaum. Kannada is the official language of Karnataka. As of 2001, it is one of 10 Indian states with a population greater than 50 million.