Region
United States
19
Africa, East
2
Africa, Eastern
2
Eastern Africa
2
États-Unis
2
North America
2
Afrique orientale
1
Afrique orientale anglophone
1
Amérique du Nord
1
Arab countries
1
Grandes Plaines
1
Great Plains
1
Pennsylvania
1
Puerto Rico
1
Siberia (R.S.F.S.R.)
1
Siberia (Russia)
1
Soviet Union
1
U.S.
1