| Year | Ruling Country | Newest Country | % Correct |
|---|---|---|---|
| 1990 | South Africa | Namibia | 80%
|
| 1975 | Australia | Papua New Guinea | 79%
|
| 1944 | Denmark | Iceland | 77%
|
| 1905 | Sweden | Norway | 77%
|
| 1975 | Netherlands | Suriname | 66%
|
| 1975 | Portugal | Angola | 64%
|
| 1962 | New Zealand | Samoa | 63%
|
| 1945 | Japan | Korea | 59%
|
| 1968 | Spain | Equatorial Guinea | 57%
|
| 1960 | Italy | Somalia | 53%
|
| 1962 | Belgium | Burundi/Rwanda | 46%
|
| 1994 | United States | Palau | 40%
|
| 1984 | United Kingdom | Brunei | 20%
|
| 1980 | France | Vanuatu | 17%
|