Geographic Subject
United States
621
India
466
Africa
396
Egypt
292
Africa, Central
226
Morocco
225
Ethiopia
224
Congo (Democratic Republic)
217
Europe
210
Palestine
209
Middle East
204
Africa, West
190
Algeria
190
South Africa
178
Africa, East
150
Africa, North
148
China
140
Sudan
133
Canada
132
Turkey
130
Sahara
119
Soviet Union
118
Italy
113
Tunisia
101
France
100
Iran
91
Great Britain
88
Germany
76
West (U.S.)
76
Asia
70
California
69
Syria
69
Mississippi River Valley
66
Tanzania
64
Indonesia
61
Russia
60
Virginia
60
Spain
59
Japan
58
Cameroon
57
Nile River
57
Texas
57
America
56
Mexico
55
Nigeria
54
Kenya
53
Africa, French-speaking Equatorial
51
Russia (Federation)
51
Southern States
51
Angola
50
more ...