Research topics below this in the hierarchy
- Germany
- Greco-Roman World
- Greece
- Italy - Malta
- Low Countries - Benelux Countries
- Netherlands (Holland)
- Eastern Europe (General)
- Russia. Soviet Union. Former Soviet Republics - Poland
- Northern Europe. Scandinavia
- Spain - Portugal
- Switzerland
- Balkan Peninsula
- Asia
- Africa
- Oceania (South Seas)
- Romanies
- Americas
- History (General)
- Great Britain
- Central Europe
- Austria - Liechtenstein - Hungary - Czechoslovakia
- France - Andorra - Monaco
- The Islamic World