yes i realize that i generalize, but its the only way to make my point about religion not being the reason for nationalism, although it is likely part of it, but had it been solely on religious terms we would not have seen so many states rise in the Balkans as then we would have seen one ore more Christian states build around religion, but that is not what happened, we saw states rise along ethnic lines as with most other european countries.... it would be historical incorrect to say that the Ottoman empire was radically different from the Austro-Hungarian or Russian empires in its treatment of non-dominant ethnic groups..thus you have two empires with their base in Christianity and one in Islam, but the outcome is the same in terms of ethnic tension... i would advice you to study Austro-Hungarian and Russian history of the Balkans, especially pre-WW1 and its involvement in making WW1 happen... please read some more on the subject if you are to comment on my answer..