Region
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Zambia
5
Alabama
4
Baltimore
4
Burma
4
Byzantine Empire
4
Cambodia
4
Chicago (Ill.)
4
Detroit (Mich.)
4
Durham
4
Ecuador
4
Egypt
4
Ethiopia
4
Florence (Italy)
4
Florence Region
4
Georgia
4
Guatemala
4
Kerala (India)
4
Korea
4
Korea (South)
4
Maryland
4
Mexican-American Border Region
4
Mongolia
4
Moscow (Russia)
4
Nevada
4
New York (N.Y.)
4
Peru
4
Philadelphia (Pa.)
4
Philippines
4
Portugal
4
Puerto Rico
4
Rome (Italy)
4
Rwanda
4
Scandinavia
4
Shanghai
4
Sonora (State)
4
Southwest, New
4
Uruguay
4
Uzbekistan
4
Venezuela
4
Africa, North
3
Algeria
3
Alps Region
3
Atlanta (Ga.)
3
Borneo
3
Botswana
3
Chaco Canyon (N.M.)
3
Germany (East)
3
Ghana
3
Gulf Coast (U.S.)
3
Hawaii
3
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