Yes, til XI century Serbia included Bosnia ( at that time and after also known as "Western baptised Serbia"). The borders were in the N. river Sava, in W. rivers Vrbas and Piva, in the S. was Adriatic and on the E. it spread to river Ibar and mountin Kopaonik. That's it considering Serbian borders till XI cen. Its to precise but nevertheless some extra info. won't mind.
Cant be.
From 925 AD till XII Bosnia is considered teritory west of Drina and east of Bosna river(and ower it to west, at southern area), north of Hum, and south of Soli(Srebrenica)
It did not streched to Vrbas and Sava at west and north those days, that come later when it become fully independed and building it own kingdom in 13/14cts.
Modern reserching and interpretation of Bosnia is that people inhabitating were slav origin, but not belonging to original Serb or Croat clans that populated areas west and east of them.
By modern interpretation, before 925 there is 50:50 it teritory was part of Croatian Kingdom, after 925 for certain it was.
Bosnia, as name, is first time mention in list of lands under control of King Tomislav in 925 who formed church, err, something, I forgot.
And it was predominantly most of time under control of Croatia till 1102.
Also I dont wish to start conversation regarding where was Serbia ( or Croatia) politicaly (or ethnicaly) before 1066 as CK dont start earlier.
I will only note that, when you are refering to borders of Serbia, reflecting situation of 12 ct all the way back to 8 tc as it is convinient, what is waco and dont have historical stand.
As for "Western baptised Serbia" name, when churches were still one (9,10,11ct ) dont make sense, it sound much more as something more new, much more new, name to me.
