| Group | Date | City | % Correct |
|---|---|---|---|
| Roman Empire (Western) | 27 BC to 286 AD, de jure 286 to 476 | Rome | 98%
|
| Roman Empire (Eastern) | 330–1453 | Constantinople | 93%
|
| Prussia | 1701–1947 | Berlin | 91%
|
| Polish-Lithuanian Commonwealth | 1596–1795, de jure 1793–1795 | Warsaw | 91%
|
| Republic of Texas | 1839–1846 | Austin | 83%
|
| Republic of Texas | 1837–1839 | Houston | 80%
|
| Mongol Empire | 1271–1368 | Khanbaliq | 77%
|
| Frankish Empire | 508–768 | Paris | 77%
|
| Mughal Empire | 1648–1857 | Shahjahanabad | 73%
|
| Polish-Lithuanian Commonwealth | 1569–1596, de jure 1569–1793 | Kraków | 71%
|
| Umayyad Caliphate | 661–744 | Damascus | 59%
|
| Federal Republic of Central America | 1821–1834 | Guatemala City | 57%
|
| Tang Dynasty | 618–683, 705–904 | Chang'an | 53%
|
| Mughal Empire | 1526–1540, 1555–1571, 1598–1648 | Agra | 51%
|
| Prussia | 1525–1701 | Königsberg | 49%
|
| Achaemenid Empire | c. 539-331 BC | Babylon | 46%
|
| Federal Republic of Central America | 1834–1838 | San Salvador | 46%
|
| Roman Empire (Western) | 286–402 | Mediolanum | 43%
|
| Frankish Empire | 795–843 | Aachen | 42%
|
| Roman Empire (Western) | 402–476 | Ravenna | 42%
|
| Kingdom of Sardinia | 1324–1720, 1798–1814 | Cagliari | 41%
|
| Achaemenid Empire | c. 515-330 BC (ceremonial) | Persepolis | 41%
|
| Kingdom of Sardinia | 1720–1798, 1814–1861 | Turin | 38%
|
| Umayyad Caliphate | 756–1031 (in exile) | Córdoba | 30%
|
| Mongol Empire | 1235–1260 | Karakorum | 24%
|
| Tang Dynasty | 664–683, de jure 683–705, 904–907 | Luoyang | 24%
|
| Republic of Texas | 1836 (interim) | Galveston | 23%
|
| Mughal Empire | 1586–1598 | Lahore | 23%
|
| Achaemenid Empire | c. 530-330 BC | Susa | 22%
|
| Achaemenid Empire | c. 550-330 BC | Ecbatana | 7%
|
| Achaemenid Empire | 6th century BC | Pasargadae | 7%
|
| Roman Empire (Eastern) | 286–330 | Nicomedia | 5%
|
| Mughal Empire | 1571–1585 | Fatehpur Sikri | 3%
|
| Frankish Empire | 431–508 | Tournai | 3%
|
| Umayyad Caliphate | 744–750 | Harran | 2%
|
| Republic of Texas | 1836 (interim) | Washington-on-the-Brazos | 1%
|
| Mongol Empire | 1206–1235 | Avraga | 0%
|
| Republic of Texas | 1836-1837 | Columbia | 0%
|
| Republic of Texas | 1836 (interim) | Harrisburg | 0%
|
| Republic of Texas | 1836 (interim) | Velasco | 0%
|