Hi Tink, I was actually wondering if that might be the case (i.e., Princip seen as hero, with national memorials like USA for Civil and Revolutionary Wars), rather hoping Kninjanin will chime in, with his experience...
I also learned that for Poland, it was WWI out of which they emerged as a nation; clearly beneficial to them.
A counterfactual corollary to your Q, assuming I understand accurately, might be: If the Archduke had not been assassinated, would World War have been prevented? ima guess that answer is NO, that Europe was a tinderbox needing only the spark, maybe express as Quantum tipping point? I have a book on existentialism that discusses WWI as an eruption of repressed existential angst...pondering that also as I look for a way forward from our present, unacceptable capitalistic/economic quagmire...
And in that light too, it's strange, the British diplomat commenting just before the assassination, that things were calmer/more peaceful than they had been in a long time, after the 1912-13 Balkan wars.
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Another irony, this from that WWI series you found, is that apparently Francis Ferdinand was quite liberal in his governing views, and would have attempted a much more inclusive, less oppressive approach to the empire.
(deep breath, V wanders off for cup of Earl Grey tea...)