i agree that tais 'muay' style influenced from khmer becauseof the interaction they had.. a lot of part of Sukotai empire in 1200s were colonised by Khmer. but i disagree with the Burma influence because tai didnt interact with burma until the around 1400s when Burma invaded Mon. So i learned in my thai-history class back in middle skool anyway. But it is more likely that the style also influence by Southern Chinese because it is 'believed' that where Tai people migrated from.