Subject Region
United States
150
Europe
56
Italy
55
France
41
England
40
Great Britain
34
Greece
29
Japan
25
Germany
24
Rome
22
China
21
New York (State)
20
Mexico
19
Spain
19
New York
16
California
14
Athens
12
India
12
Netherlands
11
Latin America
10
Byzantine Empire
8
Florence
8
Ireland
8
Southern States
8
Egypt
7
Brazil
6
Canada
6
Caribbean Area
6
London
6
Middle East
6
North America
6
Peru
6
Russia
6
Soviet Union
6
Switzerland
6
Venice
6
America
5
Colombia
5
Iran
5
Korea
5
Scandinavia
5
West (U.S.)
5
Asia
4
Asia, Central
4
Austria
4
Belgium
4
Chile
4
Espana
4
Indonesia
4
San Francisco
4
more ...