Region
United States
17
Europe
14
England
5
Germany
4
France
3
Japan
3
Alabama
2
China
2
Cuba
2
Great Britain
2
Italy
2
Latin America
2
Mexico
2
Mississippi
2
Spain
2
Africa
1
Asia
1
Austria
1
Belgium
1
Byzantine Empire
1
California
1
Cologne
1
Cologne (Germany)
1
Developing countries
1
Egypt
1
Europa
1
India
1
Leiden
1
Middle East
1
Paris (France)
1
Rome
1
Sacramento
1
Soviet Union
1
Ukraine
1
United states
1