Source Wikipedia
Selaphum is a district (amphoe) in the eastern part of Roi Et Province, northeastern Thailand.
Neighboring districts are (from the south clockwise) Phanom Phrai, At Samat, Thung Khao Luang, Thawat Buri, Chiang Khwan, Pho Chai, Phon Thong and Nong Phok of Roi Et Province, Kut Chum, Sai Mun and Mueang Yasothon of Yasothon Province.
The district's history goes back to the village Ban Khao Din Bueng Don named after an island in the large swamp Bueng Don. In 1879 Mueang Selaphum Nikhom was created. In 1912 it was renamed Selaphum, and converted into a district in 1914.
The district is divided into 18 sub-districts (tambon), which are further subdivided into 235 villages (muban). Klang is a township (thesaban tambon) which covers the whole tambon Klang and parts of tambon Na Mueang and Khwan Mueang. There are a further 16 tambon administrative organizations (TAO).