based at the Great Vihara (Mahavihara) in Anuradhapura (the ancient Sri Lankan capital). According to Theravāda sources, another one of the Ashokan missions was also sent to Suvaṇṇabhūmi ("The Golden Land"), which may refer to Southeast Asia. By the first century BCE, Theravāda Buddhism was well established in the main settlements of the Kingdom of Anuradhapura. The Pali Canon, which contains the main scriptures of the Theravāda, was committed to writing in the first century BCE. Throughout the history of ancient and medieval Sri Lanka, Theravāda was the main religion of the Sinhalese people and its temples and monasteries were patronized by the Sri Lankan kings, who saw themselves as the protectors of the religion. Over time, two other sects split off from the Mahāvihāra tradition, the Abhayagiri and Jetavana. While the Abhayagiri sect became known for the syncretic study of Mahayana and Vajrayana texts, as well as the Theravāda canon, the Mahāvihāra tradition, did not accept these new scriptures. Instead, Mahāvihāra scholars like Buddhaghosa focused on the exegesis of the Pali scriptures and on the Abhidhamma. These Theravāda sub-sects often came into conflict with each other over royal patronage. The reign of Parākramabāhu I (1153–1186) saw an extensive reform of the Sri Lankan sangha after years of warfare on the island. Parākramabāhu created a single unified sangha which came to be dominated by the Mahāvihāra sect. Epigraphical evidence has established that Theravāda Buddhism became a dominant religion in the Southeast Asian kingdoms of Sri Ksetra and Dvaravati from about the 5th century CE onwards. The oldest surviving Buddhist texts in the Pāli language are gold plates found at Sri Ksetra dated circa the 5th to 6th century. Before the Theravāda tradition became the dominant religion in Southeast Asia, Mahāyāna, Vajrayana and Hinduism were also prominent. Starting at around the 11th century, Sinhalese Theravāda monks and Southeast Asian elites led a widespread conversion of most of mainland Southeast Asia to the Theravādin Mahavihara school. The patronage of monarchs such as the Burmese king Anawrahta (Pali: Aniruddha, 1044–1077) and the Thai king Ram Khamhaeng (floruit. late 13th century) was instrumental in the rise of Theravāda Buddhism as the predominant religion of Burma and Thailand. Burmese and Thai kings saw themselves as Dhamma Kings and as protectors of the Theravāda faith. They promoted the building of new temples, patronized scholarship, monastic ordinations and missionary works as well as attempted to eliminate certain