Region
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Puget Sound Region (Wash.)
13
Saudi Arabia
13
Tucson Region
13
Alps Region
12
Byzantine Empire
12
Chile
12
Congo (Democratic Republic)
12
Danube River Region
12
Great Plains
12
Mekong River Region
12
Poland
12
Southern Appalachian Region
12
Arabian Peninsula
11
Charleston Region
11
Charlevoix Region
11
Foreign countries
11
Guinea (Region)
11
Mississippi River Region
11
New Madrid Seismic Zone
11
New York (N.Y.)
11
Nunavut
11
Philadelphia Region (Pa.)
11
San Francisco Bay Area
11
Tennessee, East
11
Texas, South
11
Volga River Region
11
Adirondack Mountains Region (N.Y.)
10
Africa, East
10
Africa, Southern
10
Appalachian region
10
Atlantic Ocean
10
Big Bend Region
10
Boston Region
10
Carpathian Mountains Region
10
Central America
10
Chesapeake Bay (Md. and Va.)
10
Chicago Region
10
El Paso (Tex.)
10
Europe, Northern
10
Hong Kong (China)
10
Houston Region
10
Indian Ocean
10
Nepal
10
New Zealand
10
North Pacific Region
10
Northeastern States
10
Oceania
10
Rio de la Plata Region (Argentina and Uruguay)
10
South China Sea
10
Sudan (Region)
10
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