Earlier quoted context omitted.
The German Empire was a constitutional monarchy, like many European countries of the time. Even today, it's a common form of democratic government. Before the empire, most of the states that formed it were constitutional monarchies, while the free cities were republics. And while there were only three free cities left at the time, there used to be many more. In some cases, their republican form of government stretche…
Constitutional monarchy is a very broad term, covering everything from the present UK, where the monarch's power is purely theoretical or ceremonial, to Germany before 1918, where the monarch's power was almost unlimited. The Kaisar appointed the head of government, was the commander in chief, and could (and did) dissolve the parliament. The main limit on his power was his own incompetence. Yes, some of the small sta…
What matters is the tradition of running a normal democracy. If the elections are fair, if the ones who lose their power step down gracefully, if there is a peaceful transition of power, and so on. If you have a tradition of that, adapting a different form of democratic government is not that hard.