The Malaysian Siamese or Thai Malaysians are an ethnicity or community who principally resides in Peninsular Malaysia which is a relatively homogeneous cultural region to Southern Burma and Southern Thailand but was separated by the Anglo-Siamese Treaty of 1909 between the United Kingdom and the Kingdom of Siam. The treaty established the modern Malaysia-Thailand Border which starts from Golok River in Kelantan and ends at Padang Besar in Perlis.