Region
United States
38
China
6
Great Britain
6
Developing countries
5
Europe
5
Greece
4
Soviet Union
4
New York
3
New York (State)
3
Rome
3
California
2
Islamic Empire
2
San Francisco
2
Brazil
1
Canada
1
Chicago
1
Confederate States of America
1
Costa Rica
1
Egypt
1
France
1
Germany (East)
1
Illinois
1
India
1
Iran
1
Japan
1
Middle East
1
Netherlands
1
New York (N.Y.)
1
Outer space
1
Palestine
1
Paraguay
1
Rome (Empire)
1
Treasure Island (San Francisco, Calif.)
1