The event that brought about a profound change in Ashoka`s administrative policy was the Kalinga War. This war had a significant impact on Ashoka and caused him to have a change of heart. The war resulted in a large-scale loss of life and suffering, which deeply affected Ashoka. He witnessed first-hand the devastation and realized the futility of warfare and the impact it had on his people. This experience led Ashoka to embrace Buddhism and adopt a policy of non-violence and compassion. He implemented various reforms such as promoting religious tolerance, improving the welfare of his subjects, and establishing hospitals and dispensaries. The Kalinga War was a turning point for Ashoka and had a profound influence on his administrative policies.