Region
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Senegal
5
Sri Lanka
5
Tropics
5
Tunisia
5
Vietnam
5
Africa, North
4
Balkan Peninsula
4
Central America
4
Communist countries
4
Czech Republic
4
Ecuador
4
Ethiopia
4
Finland
4
Illinois
4
Jamaica
4
Kazakhstan
4
London
4
London (England)
4
OECD countries
4
Philadelphia
4
Poland
4
Rome
4
Tennessee
4
Washington (D.C.)
4
Zimbabwe
4
Arctic National Wildlife Refuge (Alaska)
3
Arctic Ocean
3
Atlantic Provinces
3
Bangkok
3
Botswana
3
Chicago
3
Colorado
3
Cuba
3
Dominican Republic
3
El Niño Current
3
French-speaking countries
3
Haiti
3
Korea
3
Louisiana
3
Malawi
3
Manchester
3
Marshall Islands
3
Memphis
3
Memphis (Tenn.)
3
Mumbai
3
North Carolina
3
Northern Ireland
3
Pakistan
3
Peru
3
Polar regions
3
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