Otto von Bismarck is important because he managed to unify Germany to become a modern nation. He started decisive wars with France, Denmark and Austria to unite 39 independent German states under the Prussian leadership.
Prussia was the only state in Germany that was industrialized to be reckoned with Europe. As the Prussian Chancellor, Bismarck's main goal was to unify the whole of Germany under the Prussian control. He attacked Denmark to claim the territories of Schleswig-Holstein. Two years later, Bismarck provoked Austria emperor, Franz-Josef I, into a war in 1866. Later, he stirred tensions between Prussia and France by editing a telegram from William I, which resulted to annexation of Lorraine and Alsace by Prussia.