Association (1892) and the Dharmankur Vihar (1900) in Calcutta by the Bengali monk Kripasaran Mahasthavir, which were key events in the Bengali Theravāda revival. The founding of the Maha Bodhi Society in 1891 by Anagarika Dharmapala which focused on the conservation and restoration of important Indian Buddhist sites, such as Bodh Gaya and Sarnath. The introduction of Theravāda to other Southeast Asian nations like Singapore, Indonesia and Malaysia. Especially with Ven. K. Sri Dhammananda missionary efforts among English-speaking Chinese communities. The return of Western Theravādin monks trained in the Thai Forest Tradition to western countries and the subsequent founding of monasteries led by western monastics, such as Abhayagiri Buddhist Monastery, Chithurst Buddhist Monastery, Metta Forest Monastery, Amaravati Buddhist Monastery, Birken Forest Buddhist Monastery, Bodhinyana Monastery and Santacittarama. The spread of the Vipassana movement around the world by the efforts of people like S.N. Goenka, Anagarika Munindra, Joseph Goldstein, Jack Kornfield, Sharon Salzberg, Dipa Ma, and Ruth Denison. The Vietnamese Theravāda movement, led by figures such as Ven. Hộ-Tông (Vansarakkhita). Texts Pāli Tipiṭaka According to Kate Crosby, for Theravāda, the Pāli Tipiṭaka, also known as the Pāli Canon is "the highest authority on what constitutes the Dhamma (the truth or teaching of the Buddha) and the organization of the Sangha (the community of monks and nuns)." The language of the Tipiṭaka, Pāli, is a middle-Indic language which is the main religious and scholarly language in Theravāda. This language may have evolved out of various Indian dialects, and is related to, but not the same as, the ancient language of Magadha. An early form of the Tipiṭaka may have been transmitted to Sri Lanka during the reign of Ashoka, which saw a period of Buddhist missionary activity. After being orally transmitted (as was the custom for religious texts in those days) for some centuries, the texts were finally committed to writing in the 1st century BCE. Theravāda is one of the first Buddhist schools to commit its Tipiṭaka to writing. The recension of the Tipiṭaka which survives today is that of the Sri Lankan Mahavihara sect. The oldest manuscripts of the Tipiṭaka from Sri Lanka and Southeast Asia date to the 15th Century, and they are incomplete. Complete manuscripts of the four Nikayas are only available from the 17th Century onwards. However, fragments of the Tipiṭaka have been found in inscriptions from Southeast Asia, the earliest of which have been dated to