How did the unification of Germany begin?

The unification of Germany began from economic interests, fragmentation did not allow the Germans to receive a sufficient level of profit from the land. The North German Confederation was formed. The final unification of Germany took place on January 18, 1871, after the victory in the Franco-Prussian War, when the Prussian king Wilhelm I became the German emperor, and began by uniting dozens of states with a German population into one state. This process lasted from 1864 to 1870, during which Prussia carried out a number of military operations against Denmark, Austria and France.