Strengthening the Prussian army and Instigating a war between Prussia and France. and <span>Allowing all male citizens vote for representatives to the Reichstag.</span>
It promoted the (relatively) rapid diffusion of immigrants, language, and domesticated crops and animals. Those factors are examined in excellent detail in Jared Diamond's book, "Germ, Guns and Steel" which I highly recommend for anyone studying the development of world cultures. It's a long read, but well worth it.
The answer is B; campaign
Your 2nd and 3rd options are the correct answers. Monarchies were not quickly changed into democracies because it was much more complicated to change a government. You can't do that overnight.
