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Subject
- History24
- Politics and government17
- Kings and rulers11
- Foreign relations6
- World War, 1914-19185
- Civilization3
- Bismarck, Otto, Fürst von, 1815-18982
- Causes2
- Description and travel2
- Frederick II, King of Prussia, 1712-17862
- German reunification question (1949-1990)2
- Heraldry2
- Maps2
- Napoleonic Wars, 1800-18152
- Nobility2
- Palaces2
- Relations2
- Administrative and political divisions1
- Aristocracy (Social class)1
- Campaigns1