占巴塞
In 1902, a treaty with Siam forced the kingdom to also surrender lands on the western side of the Mekong River. These lands now form the province of Sainyabuli and the western half of Champasak Province. In 1904, the present border between Laos and Cambodia was established after Siam ceded Meluprey (Preah Vihear Province) and the Kingdom of Champasak to the French. Unlike in the annexation of the Kingdom of Luang Phrabang, which had become an official French protectorate at least nominally under the rule of the royal house, the French administration saw no benefit in a protectorate treaty with Champasak. For this reason, Champasak was declared dissolved on 22 November 1904; the area was then managed directly by the colonial administration. By internal reclassification of the provinces and by giving some of the southern areas to French Cambodia, the former Kingdom of Champasak disappeared from the map, leaving only the Champasak Province. The last King of Champasak, Ratsadanay, was however allowed to keep his title for life and became governor of Champasak province, whose administrative center was relocated to Pakse in 1908. In 1934 he was deposed by the French due to his age.