Typo
Banned
Why does every single thing ever lead to what amounts to EU except for the parts of the EU you don't like for youOh well. Then that has indeed little sense or justification to happen in 1866-1870. That requires at least a 1848 PoD, it would have to happen at the Habsburg's leadership, or with radical revolution overrunning Germany, Italy, and the Habsburg empire, and creating a mini-EU.
do you understand what nationalism that seems like the magical key for you is?