If you want to make some more historical rivers you should add the Neretva who is passing Bosnia and Croatia.
http://en.wikipedia.org/wiki/Neretva
On this river there was a famous battle: Battle of the Neretva
Here is a map of the river:
Also should not the Bosna river go a bit more to the south? End in the left part of province Sarajevo.
http://en.wikipedia.org/wiki/Neretva
On this river there was a famous battle: Battle of the Neretva
Here is a map of the river:
Also should not the Bosna river go a bit more to the south? End in the left part of province Sarajevo.