How Asoka unify the Mauryan empire?

Answer 1

through faith in Buddhism he changed the empire when he saw all his men die and when he saw blood

Answer 2

Asoka converted to Buddhism in 260 BCE. He pushed forward the teachings of Buddha in what he called the Dharma by sending out traveling ministers. He expressed sorrow over the loss of life in some of his campaigns, and declared at one point, that he would only conquer in accordance with Buddhist law.

Answer 3

He turned his back on violence when he saw his military slaying an impressive number of people. He converted to Hinduism and sent out missionaries to get people to do the same and night be so aggressive against life.