Middle Ayutthaya period (since 1991-2231) starting from the reign of trailokanat. After it has been annexed as part of the Sukhothai Kingdom of Ayutthaya Kingdom from Kingdom in 1981 are spacious. Take care not to require new adjustments. There are two important features: include power management into Party Affairs and Civic Center, with the military, which has used a different scheme till at. King v.