Chandragupta Maurya killed the previous king in the kingdom of Magadha, claimed the throne, and established the Mauryan Dynasty and Empire in 321 B.C.
Ashoka, Chandragupta's grandson, became king in 269 B.C. He expanded empire by waging wars on neighboring regions. After the battle in Kalinga, a neighboring state, that left 100,000 soldiers dead, Ashoka felt terrible for what he did, so he began to study Buddhism
He decided to rule his new kingdom by principles found in Buddhist dharma. He created new edicts, or official policy, that guaranteed religious toleration, that all subjects would be treated humanely, and that people use nonviolence.
Ashoka built roads across his empire with rest stations every 9 miles to ensure people who were traveling the roads would be safe, and had a place to rest. Ashoka sent missionaries all throughout Asia on these roads to spreading Buddhism.
These missionaries created monasteries all throughout Asia where they traveled. Buddhists came from all over to vast the stupas, which are sacred mounds that are said to contain religious items.
The kingdom reached a new high point under Ashoka, only to fall shortly after Ashoka dies in 232 B.C.