Región
Europe
Great Britain
7
European Union countries
6
United States
4
Asia
3
Europe, Eastern
3
France
2
Africa, Sub-Saharan
1
America
1
Asia, Central
1
Baltic States
1
Byzantine Empire
1
Communist countries
1
East Asia
1
Europe, Central
1
Europe, Northern
1
Germany
1
Irlande
1
Islamic Empire
1
Italy
1
North America
1
Turkey
1