| Period | Answer | % Correct |
|---|---|---|
| 1949 - | Germany / West Germany | 97%
|
| 1945 - 1949 | France | 96%
|
| 1871 - 1945 | Germany | 96%
|
| 1945 - 1949 | United Kingdom | 94%
|
| 1945 - 1949 | United States | 94%
|
| 1945 - 1949 | Soviet Union | 92%
|
| 1949 - 1990 | East Germany | 81%
|
| 1701 - 1867 | Prussia | 81%
|
| 1157 - 1806 | Margraviate of Brandenburg | 74%
|
| 1867 - 1871 | North German Confederation | 30%
|