Claim: Isan people overran the Lao Wang and forced them into corvee Iintermitten unpaid labour expected by landowners or monarchs) labour before they were integrated into Isan farming; much of Isan was populated this way.
Evidence: The Isan people (Thai: คนอีสาน, RTGS: Khon Isan, Thai pronunciation: [kʰōn ʔīːsǎːn; Lao: ຄົນອີສານ) or Northeastern Thai people are an ethno-regional group native to Northeastern Thailand ("Isan") with an estimated population of about 22 million.