| Declared war in | Country | % Correct |
|---|---|---|
| 1812 | United Kingdom | 98%
|
| 1917, 1941 | Germany | 95%
|
| 1941 | Italy | 95%
|
| 1941 | Japan | 95%
|
| 1898 | Spain | 95%
|
| 1846 | Mexico | 93%
|
| 1917 | Austria-Hungary | 74%
|
| 1942 | Bulgaria | 60%
|
| 1942 | Hungary | 60%
|
| 1942 | Romania | 52%
|