Kaiser Wilhelm I changed the power structure in Europe by beating Austria in the Seven Weeks' War, creating the North German Federation and unifying Germany to become one of the most powerful nation-states in Europe.
During the reign of Prussian kaiser Wilhelm I, Prussian army was modernized by reforms done by general Helmuth von Moltke, industrialization was fostered in economy and Otto von Bismarck increased the influence of Prussia by the construction of a complex system of alliances in Europe that weakened Austria, isolated France and put the rest of German states into Prussia's sphere of influence.
Two fact fostered an scenario of German unification led by Prussia:
Therefore, kaiser Wilhelm I changed the power structure in Europe by beating Austria in the Seven Weeks' War, creating the North German Federation and unifying Germany to become one of the most powerful nation-states in Europe.
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