Thread:37.157.216.170/@comment-26201338-20150726133143/@comment-93.71.58.232-20150726133551

It means that it has anschlussed a part, not all, of Siam. This don't means Thai was French colony.

"In 1863, the Cambodian king Norodom had requested the establishment of a French protectorate over his country. In 1867, Siam (modern Thailand) renounced suzerainty over Cambodia and officially recognized the 1863 French protectorate on Cambodia, in exchange for the control of Battambang and Siem Reap provinces which officially became part of Thailand. (These provinces would be ceded back to Cambodia by a border treaty between France and Siam in 1906)."

- Wikipedia

This quote says also that Siam only gib'd Cambodia to France, not that was anschlussed by Frog-Eater

 Mysterious Contributor