The correct answer is D. Otto von Bismark was able to unify Germany in the mid-19th century by promoting German nationalism by winning wars with France and Austria. ā
In 1870 after the third act of the Franco-Prussian War which leads to the German unification. In 1862-90 Otto von Bismarck served as prime minister of Prussia and was the founder of the German Empire. In 1871-90 he became the first chancellor of the German Empire.
Thus, Otto von Bismarck was able to unify Germany and become the first chancellor of the German Empire.
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