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
Boundary Treaty of 1866 between Chile and Bolivia and Chile reopened talks which concluded with the Treaty of Sucre or Boundary Treaty between Bolivia and Chile of 1874 (see English version in ). The pact kept the 24th parallel as the boundary between Bolivia and Chile and Chile relinquished its former rights of condominium in return for no future nitrate tax increases over Chilean companies. Boundary Treaty of 1866 between Chile and Bolivia The Boundary Treaty of 1866 between Chile and Bolivia, also called the Mutual Benefits Treaty, was signed in Santiago de Chile on August 10, 1866 by the Chilean Foreign Affairs Minister Alvaro Covarrubias and the