Prince Otto von Bismarck, Duke of Lauenburg (April 1, 1815 July 30, 1898) was one of the most prominent European aristocrats and statesmen of the nineteenth century. As Prime Minister of Prussia from 1862 to 1890, he engineered the unification of the numerous states of Germany. From 1867 on, he additionally was Chancellor of the North German Confederation. The latter was enlarged in 1871 to the German Empire, as the first Chancellor of which Bismarck served until 1890. He is nicknamed the Iron Chancellor.