Mahinda Thera was an important figure in the introduction of Buddhism to Sri Lanka in the 3rd century BCE. He was the son of Emperor Ashoka, who ruled over a vast Indian empire and played a crucial role in spreading Buddhism. Mahinda Thera is credited with bringing the teachings of the Buddha to the island, which significantly influenced Sri Lankan culture and society. Upon arriving in Sri Lanka, Mahinda Thera met with King Devanampiya Tissa and successfully converted him to Buddhism. This event marked the beginning of the establishment of Buddhism as a major religion in Sri Lanka, leading to the construction of temples and the promotion of Buddhist practices throughout the region.