History of Odisha from the earliest written records can be traced all the way back to 3rd century B.C. Ashoka fought the famous Kalinga war and brought it under Maurya rule. The Chedi emperor Kharvela of Kalinga came to power in second century B.C. He defeated the Mauryas and extended his empire as far as Mathura. The famous Hathigumpha inscription in Udaigiri near Bhubaneshwar describes in detail the war adventures of Kharvela as well as his administration.

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Author's Bio: 

History of Odisha goes back a rather long way. Most of the history of the state is replete with the dynastic as well as tribal struggle for territorial superiority.