| Date Joined | Country | % Correct |
|---|---|---|
| 1939 | Soviet Union | 98%
|
| 1939 | Nazi Germany | 97%
|
| 1939 | United Kingdom | 97%
|
| 1937 | Japanese Empire | 96%
|
| 1939 | (Free) France | 94%
|
| 1941 | United States | 94%
|
| 1940 | (Vichy) France | 94%
|
| 1937 | Chinese United Front | 93%
|
| 1940 | Italy | 92%
|
| 1939 | Poland | 91%
|
| 1939 | Canada | 88%
|
| 1940 | Norway | 85%
|
| 1939 | Australia | 84%
|
| 1940 | Belgium | 83%
|
| 1940 | Netherlands | 83%
|
| 1939 | Finland | 82%
|
| 1940 | Greece | 81%
|
| 1940 | Romania | 80%
|
| 1940 | Yugoslavia | 79%
|
| 1940 | Denmark | 78%
|
| 1939 | British Raj | 77%
|
| 1940 | Hungary | 76%
|
| 1939 | New Zealand | 76%
|
| 1942 | Brazil | 73%
|
| 1940 | Bulgaria | 72%
|
| 1942 | Mexico | 70%
|
| 1939 | South Africa | 67%
|
| 1940 | Luxembourg | 66%
|
| 1945 | Turkey | 66%
|
| 1942 | Argentina | 65%
|
| 1942 | Chile | 58%
|
| 1945 | Iran | 58%
|
| 1940 | Siam | 58%
|
| 1942 | Colombia | 57%
|
| 1941 | Iraq | 54%
|
| 1942 | Venezuela | 53%
|
| 1942 | Cuba | 52%
|
| 1942 | Peru | 52%
|
| 1942 | Uruguay | 52%
|
| 1942 | Paraguay | 51%
|
| 1942 | Panama | 50%
|
| 1942 | Ecuador | 48%
|
| 1942 | Bolivia | 47%
|
| 1942 | Costa Rica | 46%
|
| 1942 | Honduras | 46%
|
| 1945 | Mongolia | 46%
|
| 1942 | Guatemala | 44%
|
| 1939 | Slovakia | 44%
|
| 1942 | El Salvador | 43%
|
| 1942 | Nicaragua | 42%
|
| 1942 | Dominican Republic | 41%
|
| 1945 | Saudi Arabia | 41%
|
| 1942 | Haiti | 40%
|
| 1939 | Malaya | 30%
|
| 1939 | Oman | 29%
|
| 1945 | San Marino | 27%
|
| 1939 | Nepal | 25%
|
| 1945 | Liberia | 22%
|
| 1941 | Tannu Tuva | 14%
|