Region
United States
40
China
20
Soviet Union
9
Canada
8
South Africa
5
Europe
4
Tibet Autonomous Region
4
Ukraine
4
Australia
3
Cuba
3
Ireland
3
Latin America
3
Amazon River Valley
2
Chicago
2
Congo (Democratic Republic)
2
El Salvador
2
Great Britain
2
Guatemala
2
Illinois
2
New York (State)
2
Northern Ireland
2
Poland
2
Russia (Federation)
2
Rwanda
2
Tian'an Men (Beijing, China)
2
Tibet Autonomous Region (China)
2
Uruguay
2
Africa
1
Arctic regions
1
Argentina
1
Asia
1
Biography
1
California
1
Cambodia
1
Chihuahua (State)
1
Chile
1
Ciudad Juárez
1
Ciudad Juárez (Mexico)
1
Developing countries
1
Former Soviet republics
1
Gambia
1
Georgia
1
Haiti
1
Hong Kong
1
Hudson River (N.Y. and N.J.)
1
India
1
Indonesia
1
Israel
1
Korea (North)
1
Luxembourg
1
more ...