Analysis of information sources in references of the Wikipedia article "कलिंग युद्ध" in Hindi language version.
The third Mauyran king was Ashoka the Great (ruled 268-232 BCE). In about 265 BCE, Ashoka conquered the kingdom of Kalinga.
{{cite book}}: CS1 maint: unrecognized language (link)Ashoka the Great, born in 304 BCE, was emperor of all of the Indian subcontinent or nearly all. His decision to extend his rule to the unconquered kingdom of Kalinga on the Bay of Bengal brought about a conversion of the man and his empire.
युद्ध की इस विनाशलीला ने सम्राट अशोक को शोकाकल बना दिया और वह प्रायश्चित्त करने के प्रयत्न में बौद्ध विचारधारा की और आकर्षित हुआ। यहीं से सैन्य दिग्विजय का युग समाप्त हुआ तथा आध्यात्मिक विजय या धम्मविजय का युग आरम्भ हुआ
Above all, the spectacular bloodshed which took place at the battle of Kalinga in 260 BCE, in which, reputedly, no fewer than a quarter of a million soldiers died, made him change his ways. Remorseful and disgusted with his previous way of life,..Ashoka the Great, 268-232 BCE, renounced violence, converted to Buddhism, and started a number of projects to improve the lot of the poor, the aged and the widowed.
{{cite book}}: CS1 maint: unrecognized language (link)Commenting upon the achievements of Ashoka the Great, historian Radha Kamal Mukerji says "not only did Emperor Asoka achieve the consolidation of a vast Indian empire based on a unified Indian culture, but he also spread the message of universal peace.