Vajji was a mahajanapada towards the north of Ganga in the division of Tirhut. It was a confederacy of eight or nine clans. The capital of Vajji mahajanapada was situated at Vaishali.
Ashoka was a patron of Buddhism therefore he used many symbols that are relevant in Buddhism as motifs in the Ashokan pillar. According to Buddhist tradition, Buddha entered his mother’s womb in the form of a white elephant.