Region
United States
51
Congo (Democratic Republic)
22
Vietnam (Democratic Republic)
9
Southern States
3
Africa
2
Africa, Sub-Saharan
2
China
2
Colorado
2
Latin America
2
Michigan
2
New York (State)
2
Rwanda
2
Soviet Union
2
Vietnam
2
Afghanistan
1
Africa South of the Sahara
1
Africa, Central
1
Africa, East
1
Africa, West
1
Africa, Western
1
Alabama
1
Arab countries
1
Balkan Peninsula
1
Blackbird Leys (Oxford, England)
1
Brazil
1
Burundi
1
Central America
1
Chicago
1
Denver
1
Ethiopia
1
Great Lakes Region (Africa)
1
Illinois
1
Katanga (Congo)
1
Kiri (Province)
1
Massachusetts
1
Mexico
1
Minnesota
1
New York
1
New York (N.Y.)
1
Northern Ireland
1
South Africa
1
Texas
1
Vietnam, Northern
1
Điêṇ Biên Phu ̉(Vietnam)
1