The German unification of 1871 did not include the most Germanic of states at that time, Austria. Plus within a few years, Prussia's dominant role inside the unified Germany diminished.
What kind of food for thought does this, by analogy (comparison and contrast), prompt re the EU and the Eurozone as well as its political union?
PS. Plus does it offer any potential insight as to what some German strategists want to avoid with Germany's participation in the Eurozone or political union? Just thinking!