The document discusses ancient India during the Mauryan Empire from 321-185 BCE. It summarizes that Chandragupta founded the Mauryan Empire based in Pataliputra. Emperor Ashoka expanded the empire through conquest but converted to Buddhism after feeling remorse for the suffering he caused. He promoted Buddhism throughout the empire and used edicts to encourage tolerance and nonviolence. After Ashoka's death, the empire declined as it faced invasions and internal conflicts.