Region
United States
27
Great Britain
14
China
12
Japan
8
France
7
Asia
5
Europe
4
Netherlands
4
Germany
3
Pacific Area
3
Rome
3
Byzantine Empire
2
Central America
2
East Asia
2
Greece
2
India
2
Ireland
2
Korea
2
Norway
2
Pacific States
2
Soviet Union
2
Turkey
2
Western countries
2
Africa
1
Alabama
1
Asia, Central
1
Attica
1
Berlin,
1
Birmingham
1
Black Sea Region
1
Boston
1
Brazil
1
Cuba
1
Cyprus
1
Darien (Panama and Colombia)
1
Developing countries
1
Ecuador
1
Egypt
1
England
1
España
1
Finland
1
Germany,
1
Indian Coast (Africa)
1
Iran
1
Islamic Empire
1
Israel
1
Love Canal Chemical Waste Landfill (Niagara Falls, N.Y.)
1
Madagascar
1
Massachusetts
1
New York (State)
1
more ...