Geographic Subject
Africa
60
Africa, Central
58
Congo (Democratic Republic)
46
Africa, West
41
Morocco
39
Algeria
36
South Africa
34
Africa, North
33
Egypt
30
India
27
Ethiopia
23
Sudan
22
Virginia
20
Africa, East
19
United States
17
Great Britain
14
Tunisia
14
Sahara
13
Cameroon
12
Mali
12
North Carolina
12
China
11
France
11
Nigeria
11
Benin
10
Haiti
10
Russia
10
Senegal
10
South Carolina
10
Europe
9
Florida
9
Libyan Desert
9
Tanzania
9
Cuba
8
Haïti
8
Madagascar
8
Niger River
8
Nile River
8
Soviet Union
8
Turkey
8
Africa, French-speaking Equatorial
7
Angola
7
German East Africa
7
Germany
7
Mozambique
7
Hawaii
6
Japan
6
Libya
6
Middle East
6
Pennsylvania
6
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