Region
United States
30
USA
17
Great Britain
16
Germany
9
England
8
Europe
6
Großbritannien
6
Canada
4
Deutschland
4
Europa
4
Cambridge
3
Ireland
3
Japan
3
Massachusetts
3
China
2
France
2
Hungary
2
Korea
2
New York (State)
2
Pennsylvania
2
Prussia
2
Scotland
2
États-Unis
2
Africa
1
Alabama
1
Alabama (États-Unis)
1
Canda
1
Developing countries
1
Finland
1
Florida
1
Georgia
1
Grande-Bretagne
1
Greece
1
Griechenland (Altertum)
1
Illinois
1
India
1
Iowa
1
Irland
1
Islamic Empire
1
Kanada
1
Kansas
1
London
1
Maryland
1
Mexico
1
Michigan
1
New York
1
New York, NY
1
North Carolina
1
Oklahoma
1
Ontario
1
more ...