Mon and their Neighbors
The Mon was one of the earliest groups to occupy Myanmar moving to the area around 1500 BC. The Mon fought the Burmese and Thai during this time until the Mon fell to the Burmese in 1757. In 1824 the Mon people aided the British in the overthrow of Burmese with a promise by the British that the Mon people would get sovereignty but that never materialized. In the 20th century the Mon have been a repressed in Burma and continue to face issues as refugees. In Thailand although camps have been set up, there has been evidence that Thai officials in the camps harass and in some cases evict thousands of Mon refugees and force them back into Burma.
(Source: All Myanmar)