Region
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Netherlands
24
Oceania
24
Québec (Province)
24
America
23
Columbia River
23
Columbia River Watershed
23
Pacific Area
23
Chile
22
Costa Rica
22
Kansas
22
Mississippi
22
New York (N.Y.)
22
États-Unis
22
Arctic regions
21
Oklahoma
21
South Dakota
21
Central America
20
Great Basin
20
Maine
20
East Asia
19
Iraq
19
Kenya
19
Europe, Eastern
18
Great Lakes (North America)
18
London
18
Peru
18
Puerto Rico
18
Zimbabwe
18
Austria
17
Chicago
17
Malaysia
17
Southwest, New
17
Africa, Sub-Saharan
16
Argentina
16
Guatemala
16
Mediterranean Region
16
North Dakota
16
Pacific Coast
16
Ecuador
15
Former Soviet republics
15
Pacific Coast (U.S.)
15
Atlantic Coast (U.S.)
14
Colorado River (Colo.-Mexico)
14
Korea (South)
14
Long Island
14
Saudi Arabia
14
Snake River (Wyo.-Wash.)
14
Yosemite National Park (Calif.)
14
Boston
13
Earth (Planet)
13
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