Isan language
Isan or Northeastern Thai (autonym: ภาษาลาว/ພາສາລາວ, IPA: [pʰâː.sǎː lâːw]; Thai: ภาษาอีสาน, RTGS: Phasa Isan) refers to the local development of the Lao language in Thailand, after the political split of the Lao-speaking world at the Mekong River at the conclusion of the Franco-Siamese crisis of 1893. The language is still referred to as Lao by native speakers.