Region
United States
887
États-Unis
254
Europe
79
Latin America
64
Africa
40
India
39
Southern States
37
Developing countries
35
Asia
29
Mexico
29
Japan
26
Canada
24
Antarctica
22
Arctic regions
21
China
21
Brazil
16
Great Britain
16
Colorado Plateau
14
Pakistan
14
Alaska
13
Argentina
13
Germany
13
Polar regions
13
Australia
12
Caribbean Area
12
Italy
12
Northeastern States
12
Russia (Federation)
12
Soviet Union
12
Afrique
11
Arkansas
11
California
11
États-Unis (Sud)
11
Tropics
11
Peru
10
Spain
10
USA
10
Europe, Eastern
9
European Union countries
9
Turkey
9
Arab countries
7
Arctic Regions
7
Colombia
7
East Asia
7
Great Lakes (North America)
7
Pacific Area
7
Pennsylvania
7
Yugoslavia
7
Africa, Sub-Saharan
6
Asie
6
more ...