Subject Region
United States
71
Europe
57
Germany
36
Great Britain
33
France
32
China
15
Greece
15
England
13
Japan
12
India
9
Italy
8
Canada
7
Netherlands
5
Hungary
4
Mexico
4
Scotland
4
Soviet Union
4
Turkey
4
Latin America
3
New England
3
Rome
3
Copenhagen
2
Croatia
2
Denmark
2
Europe, Western
2
Iberian Peninsula
2
Middle East
2
Naples (Kingdom)
2
Ontario
2
Oxford
2
Peru
2
Toronto
2
Africa, West
1
Alexandria
1
America
1
Arab countries
1
Austria
1
Bolivia
1
California
1
Caribbean Area
1
Chile
1
Developing countries
1
Egypt
1
English-speaking countries
1
Europe, Eastern
1
Great Plains
1
Holy Roman Empire
1
Indiana
1
Islamic Empire
1
Israel
1
more ...