<P> The ancient kingdom of Kalinga, which was invaded by the Mauryan emperor Ashoka in 261 BCE resulting in the Kalinga War, coincides with the borders of modern - day Odisha . The modern state of Orissa was established on 1 April 1936, as a province in British India, and consisted predominantly of Odia - speaking regions . April 1 is celebrated as Odisha Day (utkal divas). The region is also known as Utkala and is mentioned in India's national anthem, "Jana Gana Mana". Cuttack was made the capital of the region by Anantavarman Chodaganga in c. 1135, after which the city was used as the capital by many rulers, through the British era until 1948 . Thereafter, Bhubaneswar became the capital of Odisha . </P> <P> The term "Odisha" is derived from the ancient Prakrit word "Odda Visaya" (also "Udra Bibhasha" or "Odra Bibhasha") as in the Tirumalai inscription of Rajendra Chola I, which is dated to 1025 . Sarala Das, who translated the Mahabharata into the Odia language in the 15th century, calls the region Odra Rashtra and Odisha . The inscriptions of Kapilendra Deva of the Gajapati Kingdom (1435--67) on the walls of temples in Puri call the region Odisha or Odisha Rajya . </P> <P> The name of the state was changed from Orissa to Odisha, and the name of its language from Oriya to Odia, in 2011, by the passage of the Orissa (Alteration of Name) Bill, 2010 and the Constitution (113th Amendment) Bill, 2010 in the Parliament . After a brief debate, the lower house, Lok Sabha, passed the bill and amendment on 9 November 2010 . On 24 March 2011, Rajya Sabha, the upper house of Parliament, also passed the bill and the amendment . </P> <P> Prehistoric Acheulian tools dating to Lower Paleolithic era have been discovered in various places in the region, implying an early settlement by humans . Kalinga has been mentioned in ancient texts like Mahabharata, Vayu Purana and Mahagovinda Suttanta . The Sabar people of Odisha have also been mentioned in the Mahabharata . Baudhayana mentions Kalinga as not yet being influenced by Vedic traditions, implying it followed mostly tribal traditions . </P>

When did orissa changed its name to odisha