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Subject
- History76
- Foreign relations17
- Politics and government14
- Communism13
- Influence12
- World War, 1914-191811
- Russians8
- Socialism7
- Lenin, Vladimir Ilʹich, 1870-19245
- Luxemburg, Rosa, 1871-19194
- Participation, German4
- Refugees4
- Social life and customs4
- Twentieth century4
- Description and travel3
- Germans3
- Jews3
- Political activity3
- Protest movements3
- Relations3