In 1950, India became republic and different provinces were formed in the country on the basis of language spoken in the particular region and this gave birth to the state of Mysore including various places in south India, which were earlier ruled by the kings.
Later in the year 1956, all Kannada speaking regions of South India were merged into one state. The new state was named after Mysore, which by itself was a princely state. The name Mysore was not accepted by some regions like North Karnataka and Hyderabad of the present time and people residing these areas demanded the change in the name of the state.
Finally after the prolonged discussion over the issue, in the year 1973 the state of all kannada speaking people was renamed as Karnataka on the first day of November, 1st November. The credit for this landmark decision owes to Late Devaraj Urs the then Chief Minister of state and every year the November 1st is celebrated as Kannada Rajyotsava or Karnataka Rajyotsava meaning “State festival” of Karnataka.