| Year | Answer | % Correct |
|---|---|---|
| 1831- | Belgium | 99%
|
| 1918-1939 | Germany | 98%
|
| 1990- | Germany | 98%
|
| 1815- | Spain | 97%
|
| 1861- | Italy | 96%
|
| 1815- | Andorra | 94%
|
| 1815- | Monaco | 93%
|
| 1815- | Switzerland | 93%
|
| 1815-1831 | Netherlands | 81%
|
| 1945-1990 | West Germany | 66%
|
| 1815-1871 | Prussia | 57%
|
| 1939-1945 | Nazi Germany | 38%
|
| 1871-1918 | German Empire | 36%
|
| 1815-1861 | Sardinia | 36%
|
| 1815-1870 | Bavaria | 27%
|