In reality, for as late as 1939 the main differences were language and religion, and considerable chunk of rural population considered themselves "locals" not linking with nation-state idea.
This reflects on Commonwealth being rather multi-ethnic and Austro-Hungarian occupation and repression changing little on the areas they took.
Modern states in the region are real, but contingent, and shouldn't falsely be projected backwards through history.
Clearly.
There is plenty of information regarding history of Lviv and this region in general. It's long and sad, tragic and sometimes beautiful but never simple.
Besides, I found that most people who feign ignorance know history very well and use it for their own agenda. If you know what to search in someone post history it becomes more or less obvious.