| Explanation | Country | % Correct |
|---|---|---|
| Soviet republic | Russia | 100%
|
| Soviet republic | Belarus | 99%
|
| Soviet republic | Estonia | 99%
|
| Soviet republic | Kazakhstan | 99%
|
| Soviet republic | Latvia | 99%
|
| Occupied during WWII | Poland | 99%
|
| Soviet republic | Ukraine | 99%
|
| Occupied during WWII; Post-WWII occupation zone | Germany | 98%
|
| Soviet republic | Lithuania | 98%
|
| Satellite state | Mongolia | 98%
|
| Occupied during WWII | Romania | 98%
|
| Soviet republic | Armenia | 97%
|
| Soviet republic | Azerbaijan | 97%
|
| Occupied during WWII | Bulgaria | 97%
|
| Occupation of East Turkestan and Manchuria during WWII; occupation of Xinjiang in 1934 | China | 97%
|
| Occupied during WWII | Czech Republic | 97%
|
| Soviet republic | Georgia | 97%
|
| Occupied during WWII | Hungary | 97%
|
| Soviet republic | Moldova | 97%
|
| Post-WWII occupation zone | North Korea | 97%
|
| Occupied during WWII | Slovakia | 97%
|
| Soviet republic | Turkmenistan | 97%
|
| Soviet republic | Uzbekistan | 97%
|
| Occupied during the invasion of Afghanistan; several occupations in the 1920-1930s | Afghanistan | 96%
|
| Occupied during WWII | Iran | 95%
|
| Soviet republic | Kyrgyzstan | 95%
|
| Occupied during WWII | Serbia | 95%
|
| Soviet republic | Tajikistan | 95%
|
| Post-WWII occupation zone | Austria | 94%
|
| Occupation of the Hanko cape, 1941–44, and Porkkala, 1944–1956 | Finland | 91%
|
| Occupied during WWII | Slovenia | 88%
|
| Occupied during WWII | Croatia | 86%
|
| Occpation of Bornholm, 1945–1946 | Denmark | 85%
|
| Post-WWII occupation zone | South Korea | 79%
|
| Occupation of Kirkenes, 1944 | Norway | 75%
|