Khon Kaen is a large economy-sized province is the center of the Northeast. Located at mittraphap road and Highway No. 12, cutting through. Phetchabun province and traveled to Laos to the South of Laos. The territory to the North, adjacent to the province of Loei province, Nong Bua lamphu and Udon Thani. In the East, adjacent to the province of Maha sarakham and kalasin province. The West, adjacent to the province of Chaiyaphum and phetchabun provinces. In Rattanakosin era
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