For example, the discovery of the archaeological site at ban non NOK tha. Phu wiang district. Pottery found at ongpan kheri, long service life Subsequently, these communities become in dvaravati cities. Before that there will be a power in this territory, like the WAT SI Muang archaeological site found am inscriptions which appear in Amphoe Khao suan Kwang si Muang Khom who became an authority on the territory of this or that appears as various prang Ku. In Khon Kaen province, etc.