Yasothon

Yasothon grew from Ban Sing Tha, a settlement in the Chi River country of the Khorat Plateau. In 1814 King Rama II of Siam raised it to the rank of a town, known as Mueang Yot Sunthon or Yasothon. Its first ruler, Sing, held the title Phra Sunthon Ratchawongsa. The town joined a network of Lao settlements that had spread across the plateau from the Mekong and Champasak regions.

The later city of Ubon Ratchathani also lies here.