Masarautar farko da aka yi rikodin da aka danganta ga mutanen Mon ita ce Dvaravati, ^[15] wanda ya ci gaba har zuwa kusan 1000 AZ lokacin da daular Khmer ta kori babban birninsu kuma wani yanki mai mahimmanci na mazaunan sun gudu zuwa yamma zuwa Ƙasar Burma ta yau kuma a ƙarshe sun kafa sababbin siyasa. .Wata jihar Haripuñjaya mai magana ta Mon ita ma ta wanzu a arewacin Thailand har zuwa ƙarshen karni na 13.^[16]Dangane da ilimin zamanin mulkin mallaka, tun farkon karni na 6, Mon ya fara shiga Ƙasar Burma ta yau daga masarautun Mon na Haribhunjaya da Dvaravati a Thailand ta zamani.A tsakiyar karni na 9, Mon ya kafa aƙalla ƙananan masarautu biyu (ko manyan jahohin birni) waɗanda ke kewaye da Bago da Thaton.Jihohin sun kasance muhimman tashoshin kasuwanci tsakanin tekun Indiya da babban yankin kudu maso gabashin Asiya.Duk da haka, bisa ga sake gina al'ada, farkon Mon birni sun kasance Masarautar Pagan daga arewa ta ci nasara a 1057, kuma al'adun wallafe-wallafen na Thaton sun taimaka wajen tsara wayewar Pagan na farko.^[17] Tsakanin 1050 zuwa kusan 1085, Mon masu sana'a da masu sana'a sun taimaka wajen gina wasu abubuwan tarihi guda dubu biyu a Pagan, wanda ragowarsu a yau suna hamayya da ƙawayen Angkor Wat.^[18] Rubutun Mon ana ɗaukarsa shine tushen rubutun Burmese, farkon shaidar da aka rubuta ta zuwa 1058, shekara guda bayan cin nasarar Thaton, ta hanyar malanta na zamanin mulkin mallaka.^[19]Duk da haka, bincike daga 2000s (har yanzu ra'ayi na 'yan tsiraru) yana jayayya cewa Mon tasiri a cikin ciki bayan cin nasara na Anawrahta shine babban labari mai ban sha'awa bayan Pagan, kuma Lower Burma a gaskiya ba shi da cikakkiyar siyasa mai zaman kanta kafin fadada Pagan.^[20] Wataƙila a cikin wannan lokacin, ɓarna na delta - wanda a yanzu ya shimfiɗa bakin tekun da mil uku (kilomita 4.8) a cikin ƙarni - ya kasance bai isa ba, kuma har yanzu tekun ya kai nisa a cikin ƙasa, don tallafawa yawan jama'a har ma da girman kai. yawan mutanen ƙarshen zamanin mulkin mallaka.Shaidar farko na rubutun Burma ta kasance kwanan wata zuwa 1035, kuma maiyuwa a farkon 984, duka biyun sun rigaya fiye da shaidar farko na rubutun Burma Mon (1093).Bincike daga 2000s yana jayayya cewa rubutun Pyu shine tushen rubutun Burma.^[21]Ko da yake har yanzu ana muhawara game da girman da muhimmancin waɗannan jihohi, duk malaman sun yarda cewa a cikin karni na 11, Pagan ya kafa ikonsa a Lower Burma kuma wannan cin nasara ya sauƙaƙe haɓaka al'adun gargajiya, idan ba tare da Mon na gida ba, sannan tare da Indiya da kuma tare da Theravada mai karfi Sri Lanka.Ta fuskar yanayin siyasa, cin nasarar Anawrahta na Thaton ya duba ci gaban Khmer a gabar Tenasserim.^[20]