Ancient History of Odisha

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1.
Human history in Odisha began in which era?
2.
Who defeated the last Nanda ruler Dhana Nanda?
3.
What was the main reason which gave impetus to the Kalinga War of 261 BC?
4.
Who described himself as the “Supreme Leader of Kalinga”?
5.
Construction of the famous Jagannath temple of Puri was started by?