Region
United States
217
Great Britain
87
Europe
26
England
15
Tropics
11
China
8
Developing countries
8
France
7
Japan
7
Latin America
7
European Union countries
6
Russia
6
Asia
5
Australia
5
Canada
5
Germany
5
London
5
European Economic Community countries
4
Soviet Union
4
Underdeveloped areas
4
Africa
3
California
3
Europe, Eastern
3
Africa, Sub-Saharan
2
Asia, Southeastern
2
Cuba
2
India
2
Iran
2
Italy
2
London (England)
2
Mediterranean Region
2
Pacific Area
2
Russia (Federation)
2
South Africa
2
Southern Hemisphere
2
Southern States
2
U.S
2
Amazon River Region
1
Amazon River Watershed
1
Argentine Republic
1
Australasia
1
Balkan Peninsula
1
Brazil
1
Buenos Aires (Argentina)
1
California, Southern
1
Cambridge Region
1
Caribbean Area
1
Cold regions
1
Developing Countries
1
Earth
1
more ...