Religious Cooperation between Thailand and Sri Lanka in the 19th Century: A Study Based on Exchanged Pāli Letters

When it comes to relations between Thailand (Siam) and Sri Lanka (Ceylon), the Buddhist connections between the two countries are often discussed and are highly valued. Communications between Thai and Sinhalese monks can be traced back to the 13th century: the Sukhothai era. These communications were then continuously maintained in the Ayutthaya era and have been up until the present day. Despite being situated far from each other and being separated by the sea, the people in these countries have been interacting through maritime routes and cooperating with each other regarding religious, cultural, financial, diplomatic, and political matters for centuries. The continuous interactions between the two came to a halt in the 18th century due to political instability in both countries. Only in the middle of the 19th century did Buddhists from the two countries resume their travels and interactions, rebuilding their bilateral relations and cooperation. There are very few studies that provide information regarding the religious cooperation between Siam and Ceylon in the 19th century. Religious cooperation between the two countries in the 19th Century has never been thoroughly studied and presented in detail. The purpose of the research paper is to investigate how Buddhists in these two countries cooperated with each other to achieve continuity and solidarity in Theravada Buddhism in both countries. We will address this question by analyzing the available data, which can mainly be found in the form of letters written in the Pāli language exchanged between Buddhists in the two countries. These letters have been published in Pālisandesāvalī in Sri Lanka and in Samaṇasāsana in Thailand.