Region
Argentina
2
Athens (Greece)
2
Azerbaijan
1
Baku
1
Bolivia
1
Bosnia and Herzegovina
1
Boston
1
China
2
Egypt
2
England
1
Europe
2
France
4
Germany
1
Great Britain
4
Greece
6
Iran
4
Japan
4
Jeme (Extinct city)
1
Korea
1
Love Canal Chemical Waste Landfill (Niagara Falls, N.Y.)
1
Massachusetts
1
Mexican-American Border Region
2
Middle East
2
Normandy
1
Southern States
5
United States
8
Yugoslavia
1