| Year | Change | Country | % Correct |
|---|---|---|---|
| 1783 | Gain | Great Britain | 97%
|
| 1803 | Gain | France | 66%
|
| 1819 | Exchange | Spain | 51%
|
| 1848 | Gain | Mexico | 50%
|
| 1818 | Exchange | United Kingdom | 48%
|
| 1845 | Gain | Texas | 45%
|
| 1846 | Loss | United Kingdom | 44%
|
| 1898 | Gain | Spain | 41%
|
| 1867 | Gain | Russia | 40%
|
| 1791 | Gain | Vermont | 38%
|
| 1860/61 | Loss | Confederate States | 37%
|
| 1898 | Gain | Hawaii | 31%
|
| 1942 | Loss | Japan | 31%
|
| 1946 | Loss | Philippines | 31%
|
| 1902 | Loss | Cuba | 28%
|
| 1810 | Gain | West Florida | 23%
|
| 1986 | Loss | F. S. Micronesia | 17%
|
| 1994 | Loss | Palau | 17%
|
| 1986 | Loss | Marshall Islands | 16%
|
| 1917 | Gain | Denmark | 12%
|
| 1903 | Gain | Panama | 12%
|
| 1979 | Loss | Panama | 12%
|
| 1899 | Gain | Samoa | 12%
|