| Year | Answer | % Correct |
|---|---|---|
| 1917-1991 | Soviet Union | 100%
|
| 1949- | China | 97%
|
| 1948- | North Korea | 95%
|
| 1959- | Cuba | 89%
|
| 1976- | Vietnam | 84%
|
| 1975- | Laos | 68%
|
| 1945-1992 | Yugoslavia | 59%
|
| 1949-1990 | East Germany | 54%
|
| 1960-1990 | Czechoslovakia | 49%
|
| 1978-1992 | Afghanistan | 41%
|
| 1918 | Finland | 35%
|
| 1870-1871 | France | 30%
|
| 1920-1921 | Iran | 24%
|
| 1948-1958 | Colombia | 19%
|
| 1975-1992 | Madagascar | 5%
|