| When | Capital | Country | % Correct |
|---|---|---|---|
| 1922–1991 | Moscow | Soviet Union | 97%
|
| 1945–1990 | East Berlin | East Germany | 94%
|
| 1918–1992 | Belgrade | Yugoslavia | 90%
|
| 1918–1992 | Prague | Czechoslovakia | 89%
|
| 1453–1923 | Istanbul | Ottoman Empire | 87%
|
| 1845–1893 | Honolulu | Hawaii | 86%
|
| 1452–1707 | Edinburgh | Scotland | 83%
|
| 1839–1846 | Austin | Texas | 77%
|
| 1428–1521 | Tenochtitlan | Aztec Empire | 67%
|
| 1701–1871 | Berlin | Prussia | 67%
|
| 330–1453 | Constantinople | Byzantine Empire | 63%
|
| 1438–1533 | Cuzco | Incan Empire | 63%
|
| 1955–1975 | Saigon | South Vietnam | 63%
|
| 1912–1951 | Lhasa | Tibet | 52%
|
| 1861–1865 | Richmond | Confederate States of America | 46%
|
| 1907–1949 | St. John's | Newfoundland | 27%
|
| 1854–1902 | Bloemfontein | Orange Free State | 22%
|
| 1526–1648 | Agra | Mughal Empire | 21%
|