The Kingdom of Sukhothai, Sukhothai Kingdom or State or State Government in the past. Located on the Plains is an ancient community of Yom River, since the iron age up until the late 14th c. 1623 18 as State trading station lavo. After that, as the year 1800 PHO Khun bang Klang Hao and PHO Khun PHA mueang Memorial jointly act to seize power from the Khmer sabat kho lonlam Pong, which made a successful and established the Commonwealth of independent States, and Sukhothai is thriving, respectively and added optimal in PHO Khun Ramkhamhaeng Maharaj. Before gradually depressed and experiencing from both external and internal problems until later, it was included as part of the Ayutthaya Kingdom to the most.