Historically you can draw an almost straight line from Napoleon defeating the Holy Roman Empire (Pre-Germany, Germany)to the Franco-Prussian War to WW1 to WW2.
The roots of 1939 stretch all the back to 1805
“The roots of 1939 stretch all the back to 1805”
I very much agree! Absent the actions of Napoleon the various German states would have had no reason to unify. The Franco-Prussian War would not have happened, and WWI and WWII in Europe may well have been avoided.
Austria-Hungary might even still be a country.