River systems of Thailand divides into two major branches, the " Tiền Giang" (Front River) and "Hậu Giang" (Back River). These in turn enter the South China Sea through nine estuaries. The following are the principal tributaries of Mekong River which flow through Thailand (tributaries entirely outside the Thai border not shown). The Mekong drains a considerable portion of northeast Thailand. In terms of Thai territory drained, it is second only to the Chao Phraya system. The Salawin River rises in Tibet (Tibetan: རྒྱལ་མོ་རྔུལ་ཆུ།) after which it flows through Yunnan, where it is known as the "Nujiang" River (), although either name can be
Hill tribe (Thailand) Hill tribe (Thailand) Hill tribe (, ) (Northern Thai: จาวดอย, คนดอย, ; "mountain people/folk") is a term used in Thailand for all of the various ethnic groups who mostly inhabit the high mountainous Northern and Western regions of Thailand, including both sides of the border areas between Northern Thailand, Laos and Burma, the Phi Pan Nam Range, the Thanon Range, the latter a southern prolongation of the Shan Hills, as well as the Tenasserim Hills in Western Thailand. These areas are known for their often mountainous terrain which is in some areas covered by thick forests, while in others it