Upon the looter invasions by the Avars and Slavs from 6th-9th century, bringing Slavic languages, both probably gave way to feudalism only with the might by the Frankish penetrating into the region in the late 9th century (Bosnia probably originated as one such pre-feudal entity).
Avaaride ja slaavlaste sissetung 6. -9. sajandini, tuues kaasa slaavi keeled, liikus ilmselt feodalismi alles frankide survel, kes tungisid piirkonda 9. sajandi lõpul (Bosnia oli ilmselt üks selline eelfeodaalne üksus).