dude,croats are mostly serb chatolics,serbo-croatian is called that way so that the craots wouldn't have felth any lower,craots have some old words that they still sue,that we used to use,and they try to copy of'a germans,and how do you know craots 1k years ago aren't the same story as today,just chatolised serbs,that are now somewhere in german or austria,after all,all of our history comes from vatican scources(alot of it atleest)so we know what we are dealing with