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Subject (Region)
- Great Britain6
- Mexico5
- France4
- Oregon Country (1818-1848)4
- Texas, Republic of4
- Canada3
- China3
- Russia (to 1921)3
- Africa2
- Alaska, Department and District of (1867-1912)2
- Argentina2
- Austria2
- Bahamas2
- District of Columbia2
- Ecuador2
- Florida Territory (1822-1845)2
- Germany (to 1949; 1990- )2
- Gibraltar2
- Hawaii (to 1898)2
- Italy2