Region
Missouri River
22
Columbia River
14
West (U.S.)
14
Missouri River Valley
11
North America
7
United States
5
West United States
4
États-Unis (Ouest)
3
Northwestern States
3
The West
3
Columbia (Fleuve)
2
Missouri
2
Missouri (Rivière)
2
Missouri Valley
2
Allemagne
1
États-Unis
1
Germany
1
Louisiana
1
Minnesota
1
Mississippi River Valley
1
Missouri, Vallée du
1
Nordamerika
1
Wisconsin
1