| Membership | Answer | % Correct |
|---|---|---|
| 1920; 1933 - 1946 | Argentina | 100%
|
| 1920 - 1946 | Australia | 100%
|
| 1920 - 1938 | Austria | 100%
|
| 1920 - 1926 | Brazil | 100%
|
| 1920 - 1946 | British Empire | 100%
|
| 1920 - 1946 | Canada | 100%
|
| 1920 - 1938 | Chile | 100%
|
| 1920 - 1946 | China | 100%
|
| 1920 - 1946 | Colombia | 100%
|
| 1920 - 1940 | Denmark | 100%
|
| 1920 - 1946 | Greece | 100%
|
| 1920 - 1933 | Japanese Empire | 100%
|
| 1920 - 1946 | Kingdom of Serbs, Croats and Slovenes | 100%
|
| 1931 - 1946 | Mexico | 100%
|
| 1920 -1946 | New Zealand | 100%
|
| 1920 - 1939 | Peru | 100%
|
| 1920 - 1946 | Sweden | 100%
|
| 1920 - 1946 | Belgium | 95%
|
| 1920 - 1946 | British India | 95%
|
| 1920 - 1939 | Czechoslovakia | 95%
|
| 1934 - 1946 | Ecuador | 95%
|
| 1920 - 1941 | France | 95%
|
| 1943 - 1945 | Free France | 95%
|
| 1926 - 1933 | Germany | 95%
|
| 1923 - 1946 | Irish Free State | 95%
|
| 1920 - 1937 | Italy | 95%
|
| 1920 - 1946 | Netherlands | 95%
|
| 1920 - 1946 | Norway | 95%
|
| 1920 - 1946 | Poland | 95%
|
| 1920 - 1946 | Portugal | 95%
|
| 1934 - 1939 | Soviet Union | 95%
|
| 1920 - 1926; 1928 - 1939 | Spain | 95%
|
| 1920 - 1938 | Venezuela | 95%
|
| 1920 - 1939 | Albania | 91%
|
| 1920 - 1946 | Bulgaria | 91%
|
| 1920 - 1946 | Finland | 91%
|
| 1922 - 1939 | Hungary | 91%
|
| 1920 - 1946 | Luxembourg | 91%
|
| 1920 - 1946 | Panama | 91%
|
| 1920 - 1935 | Paraguay | 91%
|
| 1920 - 1940 | Romania | 91%
|
| 1932 - 1946 | Turkey | 91%
|
| 1920 - 1946 | Uruguay | 91%
|
| 1920 - 1946 | Bolivia | 86%
|
| 1937 - 1946 | Egypt | 86%
|
| 1920 - 1936 | Guatemala | 86%
|
| 1920 - 1936 | Honduras | 86%
|
| 1920 - 1936 | Nicaragua | 86%
|
| 1920 - 1946 | Persia | 86%
|
| 1920 - 1946 | South Africa | 86%
|
| 1923 - 1936 | Abyssinia | 82%
|
| 1920 - 1927 | Costa Rica | 82%
|
| 1924 - 1946 | Dominican Republic | 82%
|
| 1920 - 1937 | El Salvador | 82%
|
| 1920 - 1942 | Haiti | 82%
|
| 1921 - 1940 | Lithuania | 82%
|
| 1920 - 1946 | Switzerland | 82%
|
| 1921 - 1940 | Estonia | 77%
|
| 1921 - 1940 | Latvia | 77%
|
| 1920 - 1946 | Liberia | 77%
|
| 1932 - 1946 | Iraq | 73%
|
| 1920 - 1946 | Siam | 73%
|
| 1934 - 1946 | Afghanistan | 64%
|