. ▁ 4 8 0 s ▁but ▁became ▁independent ▁only ▁from ▁the ▁ 7 th ▁century , ▁and ▁the ▁Fran ks , ▁who ▁named ▁a ▁front ier ▁march ▁the ▁March ▁of ▁P ann onia ▁in ▁the ▁late ▁ 8 th ▁century . ▁The ▁term ▁P ann onia ▁was ▁also ▁used ▁for ▁a ▁S lav ic ▁du chy ▁that ▁was ▁v ass al ▁to ▁the ▁Fran ks . ▁ ▁Between ▁the ▁ 5 th ▁and ▁the ▁ 1 0 th ▁centuries , ▁the ▁roman ized ▁population ▁of ▁P ann onia ▁developed ▁the ▁Rom ance ▁P annon ian ▁language , ▁mainly ▁around ▁Lake ▁Bal aton ▁in ▁present - day ▁western ▁Hung ary , ▁where ▁there ▁was ▁the ▁k esz th ely ▁culture . ▁This ▁language ▁and ▁the ▁related ▁culture ▁became ▁ext inct ▁with ▁the ▁arrival ▁of ▁the ▁Mag y ars . ▁ ▁C ities ▁and ▁auxili ary ▁for ts ▁ ▁The ▁native ▁settlement s ▁consisted ▁of ▁pag i ▁( c ant ons ) ▁containing ▁a ▁number ▁of ▁v ici ▁( v ill ages ), ▁the ▁majority ▁of ▁the ▁large ▁towns ▁being ▁of ▁Roman ▁origin . ▁The ▁cities ▁and ▁towns ▁in ▁P ann onia ▁were : ▁ ▁Now ▁in ▁Austria : ▁ ▁Car n unt um ▁( P et ron ell , ▁Bad ▁Deutsch - Al ten burg ) ▁ ▁V ind ob ona ▁( V ien na ) ▁ ▁Now ▁in ▁Bos nia ▁and ▁Her ce gov ina : ▁ ▁Sal da e ▁( Br č ko ) ▁ ▁Ser bin um ▁or ▁Serv it