Firstly, don't you think that there is written data in both languages/dialect for past 1000 years? Serbs and Croats (and Slovenes) existed as separate ethnicities before they came to Balkans (and I really don't see how these ethnicities should be called if not 'nations'). Now, what is true is that there was (and still is) process of creating new nations separated by religion or something else, but that should not stand in the way of establishing facts about true nations. By the way, if Slovenes are language nation Zagreb would be in Slovenia.  07:33 1 Jun 2003 (UTC)