| Year Joined | Answer | % Correct |
|---|---|---|
| 1937 | China | 100%
|
| 1941 | China | 97%
|
| 1941 | Soviet Union | 97%
|
| 1939 | Soviet Union | 97%
|
| 1939 | UK | 97%
|
| 1941 | USA | 97%
|
| 1939 | France | 94%
|
| 1942 | France | 94%
|
| 1937 | Japan | 94%
|
| 1943 | Italy | 91%
|
| 1940 | Italy | 91%
|
| 1940 | Belgium | 88%
|
| 1944 | Bulgaria | 88%
|
| 1941 | Bulgaria | 88%
|
| 1939 | Canada | 88%
|
| 1945 | Finland | 88%
|
| 1939 | Finland | 88%
|
| 1940 | Netherlands | 88%
|
| 1940 | Norway | 88%
|
| 1939 | Poland | 88%
|
| 1944 | Romania | 88%
|
| 1940 | Romania | 88%
|
| 1939 | Germany | 85%
|
| 1940 | Greece | 85%
|
| 1939 | Australia | 82%
|
| 1940 | Denmark | 82%
|
| 1940 | Denmark | 82%
|
| 1941 | Yugoslavia | 82%
|
| 1941 | Yugoslavia | 82%
|
| 1942 | Brazil | 76%
|
| 1940 | Luxemburg | 76%
|
| 1939 | New Zealand | 74%
|
| 1942 | Mexico | 68%
|
| 1945 | Argentina | 65%
|
| 1945 | Egypt | 65%
|
| 1940 | Hungary | 65%
|
| 1945 | Turkey | 65%
|
| 1940 | Thailand | 59%
|
| 1935 | Abyssinia | 53%
|
| 1945 | Chile | 53%
|
| 1943 | Columbia | 53%
|
| 1941 | Iraq | 50%
|
| 1945 | Paraguay | 50%
|
| 1940 | Slovakia | 50%
|
| 1939 | South Africa | 50%
|
| 1945 | Uruguay | 50%
|
| 1941 | Cuba | 47%
|
| 1943 | Iran | 47%
|
| 1945 | Mongolia | 47%
|
| 1945 | Venezuela | 47%
|
| 1943 | Bolivia | 44%
|
| 1945 | Ecuador | 44%
|
| 1945 | Peru | 44%
|
| 1941 | Croatia | 35%
|
| 1939 | Manchukuo | 29%
|
| 1945 | Saudi Arabia | 29%
|
| 1944 | Liberia | 24%
|
| 1943 | Burma | 12%
|