Region
United States
30
Germany
28
Spain
8
Europe
7
Austria
4
Russia
3
Valencia (Region)
3
Valencia (Spain : Region)
3
Constitutional history
2
Europe, Eastern
2
Europe, Western
2
New York
2
New York (N.Y.)
2
New York (State)
2
Czechoslovakia
1
Egypt
1
England
1
Foreign countries
1
France
1
Great Britain
1
Israel
1
Palestine
1
Slavic countries
1
Southern States
1
Vienna
1
Vienna (Austria)
1