 When the United Kingdom and Siam (Thailand) signed the Anglo-Siamese Treaty of 1909, only Satun remained with Siam, which was then placed under Monthon Phuket (มณฑลภูเก็ต) in 1910, until 1933.Originally Satun Province was divided into two districts and one minor district.Mambang (มำบัง) was one of these two original districts, which was renamed "Mueang Satun" in 1938, when all capital districts were named according to the corresponding province name.