German Unification By hinmanb Period: Dec 2, 1805 to Dec 1, 1812 Napoleon invades German Lands Period: Sep 1, 1814 to Jun 1, 1815 Congress of Vienna Apr 1, 1815 Otto Von Bismarck Jan 1, 1834 Zollverein Period: May 18, 1848 to May 31, 1849 Frankfurt Assembly demands unity Apr 3, 1849 Frederick William IV is offered the Throne Jan 2, 1861 William I of Prussia becomes Emperor Feb 1, 1864 Bismarck declares war on Denmark May 1, 1866 Bismarck declares war on Austria Period: Jul 19, 1870 to May 10, 1871 Franco Prussian War Jan 1, 1871 Bismarck becomes chancellor Jan 18, 1871 Second Reich Period: Jul 1, 1871 to Jul 1, 1878 Campaign against the church (Kulturkampf) Period: Oct 19, 1878 to Mar 31, 1881 Campaign against the Socialists Jun 18, 1888 William II becomes Kaiser Mar 18, 1890 Bismarck resigns
