| Year | Old Owner | New Owner | Area | % Correct |
|---|---|---|---|---|
| 2014 | Ukraine | Russia | Crimea | 92%
|
| 1997 | United Kingdom | China | Hong Kong | 92%
|
| 1867 | Russia | United States | Alaska | 85%
|
| 1999 | Portugal | China | Macau | 76%
|
| 1803 | France | United States | Louisiana | 74%
|
| 1845 | independent | United States | Texas | 73%
|
| 1951 | de-facto independent | China | Tibet | 67%
|
| 1982 | Israel | Egypt | Sinai | 65%
|
| 1898 | Spain | United States | Puerto Rico | 60%
|
| 1713 | Spain | Great Britain | Gibraltar | 58%
|
| 1938 | independent | Germany | Austria | 55%
|
| 1898 | Spain | United States | Philippines | 55%
|
| 1967 | Jordan | Israel | West Bank | 54%
|
| 1283 | de-facto independent | England | Wales | 53%
|
| 1919 | Germany | France | Alsace-Lorraine | 51%
|
| 1961 | Portugal | India | Goa | 48%
|
| 1898 | Spain | United States | Guam | 46%
|
| 2008 | Georgia | Russia | South Ossetia | 43%
|
| 1769 | independent | France | Corsica | 23%
|
| 30 BC | independent | Rome | Egypt | 22%
|