Answer:
Buddhism.
Step-by-step explanation:
Most enduring were Ashoka’s services to Buddhism. He built a number of stupas (commemorative burial mounds) and monasteries and erected pillars on which he ordered inscribed his understanding of religious doctrines. He took strong measures to suppress schisms within the sangha (the Buddhist religious community) and prescribed a course of scriptural studies for adherents. The Sinhalese chronicle Mahavamsa says that when the order decided to send preaching missions abroad, Ashoka helped them enthusiastically and sent his own son and daughter as missionaries to Sri Lanka. It is as a result of Ashoka’s patronage that Buddhism, which until then was a small sect confined to particular localities, spread throughout India and subsequently beyond the frontiers of the country.