Answer:
A. Strengthening the Prussian army.
C. Instigating a war between Prussia and France.
D. Allowing all male citizens vote for representatives to the Reichstag.
Explanation:
A. Bismark applied the developed Prussian army to seize Schleswig and Holstein from Denmark to then escalate a dispute with Austria into war. Prussia won and annexed more territory in Germany.
C. As Bismark couldn´t convince the southern German states to follow the North German Confederation, he instigated hostilities with France in order to unite the German states. The German triumph in the Franco-Prussian War got to the southern German states, and in they joined the German empire.
D. Every German men above 25 years old was qualified to vote. The members of the Reichstag were elected in single-member constituencies by majority vote, in general, universal and secret elections.
