Collection of facts about the German Empire

This post is a collection facts about the German Empire (1871-1918). There are 11 facts listed below. Source: Wikipedia

• Unification of Germany (1871)
• 25 states (4 kingdoms, 6 grand duchies, 5 duchies, 7 principalities, 3 free Hanseatic cities)
• Otto von Bismarck was the first chancellor 1871-1890
• Wilhelm I was emperor 1871-1888
• Formed alliance with Austria-Hungary in 1879
• Occupied territories in Africa and Asia
• Wilhelm II was emperor 1888-1918
• Fought in World War I (1914-1918)
• Expanded east in Treaty of Brest-Litovsk in March 1918
• Ended during the November 1918 Revolution
• Treaty of Versailles imposed reparation costs on Germany
• Succeeded by the Weimar Republic