Region
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Pakistan
7
Panama
1
Panama Canal (Panama)
1
Persian Gulf Region
1
Rome
1
Rome (Empire)
1
Russia
3
Russia (Federation)
108
Saudi Arabia
4
Scandinavia
1
South Africa
1
South America
7
South Asia
1
Southeast Asia
5
Southwestern States
1
Soviet Union
29
Spratly Islands
1
Sudan
1
Sweden
1
Syria
22
Taiwan
7
Taiwan Strait
2
Trinidad
2
Trinidad and Tobago
2
Turkey
4
Ukraine
20
United States
4,117
Venezuela
4
Vietnam
4
Washington (D.C.)
24
West (U.S.)
2
Western Hemisphere
3
Western countries
3
Yemen (Republic)
13
États-Unis
2