| Time as communist country | Notes | Answer | % Correct |
|---|---|---|---|
| 1922-91 | Now Russia. Communism writings by Karl Marx began 1848, revolution in 1917 | Soviet Union | 97%
|
| 1949-present | Nearly capitalist in 1989 before Tiananmen Square disaster | China | 92%
|
| 1945-present | Invaded South Korea in the Korean War | North Korea | 92%
|
| 1965-present | Only non-Asian communist country of today | Cuba | 90%
|
| 1944-89 | Liberated from Germany by Soviet Union in World War 2 in 1944 | Poland | 89%
|
| 1976-present | Formed by South Vietnam and communist North Vietnam at end of Vietnam War | Vietnam | 89%
|
| 1949-90 | Combined with West Germany in 1990 to form today's Germany | East Germany | 86%
|
| 1946-90 | Became communist after a successful coup d'etat in its capital, Sofia | Bulgaria | 84%
|
| 1949-89 | Peaceful demonstration of students in Budapest led to a revolt in 1956 | Hungary | 83%
|
| 1947-89 | Ally of Nazi Germany in World War 2, under Soviet control from 1945 until 1958 | Romania | 83%
|
| 1945-92 | Only Eastern European communist country to not be a part of the Warsaw Pact | Yugoslavia | 83%
|
| 1948-90 | Attempted revolt against communism in Prague Spring of 1968 | Czechoslovakia | 81%
|
| 1975-present | Communist Pathet Lao movement came to power following a civil war | Laos | 79%
|
| 1945-76 | Won Vietnam War in 1975 and combined with South Vietnam to form Vietnam | North Vietnam | 79%
|
| 1946-92 | Last Eastern European country to cease being a communist country | Albania | 70%
|
| 1967-90 | Combined with North Yemen in 1990 to form today's Yemen | South Yemen | 69%
|
| 1978-92 | Invaded by Soviet Union during war in 1978. Soviet Union withdrew in 1992 | Afghanistan | 68%
|
| 1975-92 | Communism established here shortly after it gained independence from Portugal | Angola | 68%
|
| 1924-92 | Regime forcefully established by Soviet Union in 1924 | Mongolia | 66%
|
| 1936-39 | Today a region in north-east Spain, independent during the Spanish Civil War | Catalonia | 64%
|
| 1970-92 | First communist leader was the first African head of state who proclaimed himself a Marxist | Congo | 56%
|
| 1975-90 | Communism established here shortly after it gained independence from Portugal | Mozambique | 55%
|
| 1987-91 | Power fell to a military dictatorship known as the Derg | Ethiopia | 48%
|
| 1979-83 | Invaded by US in 1983 | Grenada | 46%
|
| 1969-91 | Communism seized power in a bloodless coup in 1969. Civil war in 1991 ended the communist regime | Somalia | 39%
|
| 1979-89 | Now Cambodia | Kampuchea | 36%
|
| 1975-90 | Successful overthrow of government in 1972 | Benin | 34%
|