Wait, it has to be led by Bavaria? In the 1860's - 1870's? Difficult.
Hrm. Perhaps a worse 1848 revolution could wreck Austria, causing a couple countries to slip off - or maybe just Hungary and Galicia. We could then perhaps see Bavaria form some sort of union with Wurttemberg and Baden, which would then proceed to slowly incorporate this Austria-Without-A-Hungary.
Not likely, of course. I'm just idly speculating.
Hrm. Perhaps a worse 1848 revolution could wreck Austria, causing a couple countries to slip off - or maybe just Hungary and Galicia. We could then perhaps see Bavaria form some sort of union with Wurttemberg and Baden, which would then proceed to slowly incorporate this Austria-Without-A-Hungary.
Not likely, of course. I'm just idly speculating.