▁control , ▁it ▁is ▁also ▁in ev itable ▁open ▁a ▁new ▁problems ▁for ▁C ali ph ate . ▁po ckets ▁of ▁trib al ▁resistance ▁continued ▁for ▁centuries ▁in ▁the ▁Afghan ▁territ ories . ▁During ▁the ▁ 7 th ▁century , ▁Arab ▁arm ies ▁made ▁their ▁way ▁into ▁the ▁region ▁of ▁Afghan istan ▁from ▁K hor as an . ▁the ▁second ▁problem ▁was ▁As ▁a ▁cor ollary ▁to ▁the ▁Muslim ▁con quest ▁of ▁Pers ia , ▁the ▁Muslim s ▁became ▁neighb ors ▁of ▁the ▁city ▁states ▁of ▁Trans ox iana . ▁Although ▁Trans ox iana ▁was ▁included ▁in ▁the ▁lo os ely ▁defined ▁" T urk est an " ▁region , ▁only ▁the ▁r uling ▁el ite ▁of ▁Trans ox iana ▁was ▁partially ▁of ▁Turk ic ▁orig ins ▁whereas ▁the ▁local ▁population ▁was ▁mostly ▁a ▁diverse ▁mix ▁of ▁local ▁Iran ian ▁populations . ▁As ▁the ▁Arab s ▁reached ▁Trans ox iana ▁following ▁the ▁con quest ▁of ▁the ▁S ass an id ▁Pers ian ▁Empire , ▁local ▁Iran ian - T urk ic ▁and ▁Arab ▁arm ies ▁cl ashed ▁over ▁the ▁control ▁of ▁Trans ox iana ' s ▁Sil k ▁Road ▁cities . ▁In ▁particular , ▁the ▁T urg esh ▁under ▁the ▁leadership ▁of ▁Sul uk , ▁and ▁Kh az ars ▁under ▁Bar j ik ▁cl ashed ▁with ▁their ▁Arab ▁neighb ours ▁in ▁order ▁to ▁control ▁this ▁econom ically ▁important ▁region . ▁it ▁was ▁after ▁a ▁heavy ▁works ▁of ▁two ▁notable ▁Um ay y ad ▁gener als , ▁Q ut ay ba ▁ibn ▁Muslim ▁and