Changes

The first written records of Slavic-Croatians started in the late 8th (''as'' Slavs first) and early 9th century.  

The first written records of Slavic-Croatians started in the late 8th (''as'' Slavs first) and early 9th century.  

I believe one of the reasons was that the Croatian tribes started to become western Europeanised (this amongst many others things includes written records). Within Dalmatian Ducatus of the Carolingian Empire (812) certain Croatian leaders became the political elite and took political leadership.  In order to maintain this they became  Christians thus connecting with Rome (''via'' the Carolingian Empire, the Dalmatian Roman City States i.e Spalatum, modern Split and the Republic of Venice). They then created military alliances and trade with neighbors, etc. With this, after a further period of time, the mainland was mostly Slavicized. In terms of language Croatian Slavic Chakavian became ''Lingua Franca'' of the inland area and started to replace Latin Dalmatian (Romance).  It has be written that within the Court of Duke Trpimir (dux Trepimerus/Trepime) two languages were spoken. One Slavic based and the other Latin based.

I believe one of the reasons was that the Croatian tribes started to become western Europeanised (this amongst many others things includes written records). Within Dalmatian Ducatus of the Carolingian Empire (812) certain Croatian leaders became the political elite and took political leadership.  In order to maintain this they became  Christians thus connecting with Rome (''via'' the Carolingian Empire, the Dalmatian Roman City States i.e Spalatum, modern Split and the Republic of Venice). They then created military alliances and trade with neighbors, etc. With this, after a further period of time, the mainland was mostly Slavicized. In terms of language Croatian Slavic Chakavian became ''Lingua Franca'' of the inland area and started to replace Latin Dalmatian (Romance).  It has been written that within the Court of Duke Trpimir (dux Trepimerus/Trepime) two languages were spoken. One Slavic based and the other Latin based.

With this all happening the Carolingian Empire (as well as others) thought it to be good idea to work as much as possible with the new arrivals Sclaveni-Croatorum for the their own vested interests of a frontier country ('borderland').

With this all happening the Carolingian Empire (as well as others) thought it to be good idea to work as much as possible with the new arrivals Sclaveni-Croatorum for the their own vested interests of a frontier country ('borderland').