| Max Size (km^2) | Year | Answer | % Correct |
|---|---|---|---|
| 15,774,027 | 1639-1763 | Russia | 94%
|
| 23,170,748 | 1829-1870 | United Kingdom | 89%
|
| 2,211,732 | 1207 | Mongol | 81%
|
| 22,355,264 | 1922-1991 | Soviet Union | 77%
|
| 4,780,762 | 103-251 | Roman Empire | 75%
|
| 7,096,157 | 1540-1580 | Spain | 67%
|
| 217,514 | -3000--2500 | Egypt | 60%
|
| 3,811,590 | 1371-1381 | Ming | 41%
|
| 5,381,502 | -329--323 | Macedonia | 40%
|
| 9,648,897 | 671-750 | Umayyad | 34%
|
| 4,672,303 | -108-9 | Han | 29%
|
| 2,898,271 | 978-1071 | Song | 26%
|
| 7,956,957 | 631-671 | Tang | 24%
|
| 9,589,767 | 750-876 | Abbasid | 23%
|
| 10,426,181 | 1271-1371 | Yuan | 23%
|
| 4,599,662 | 1381-1393 | Golden Horde | 16%
|
| 8,811,989 | 1580-1639 | Iberian Union | 14%
|
| 3,939,396 | -297--199 | Maurya | 14%
|
| 5,408,908 | 1393-1411 | Timurid | 12%
|
| 1,031,694 | -1556--1046 | Shang | 10%
|
| 4,672,303 | 9-19 | Xin | 10%
|
| 4,007,109 | -199--108 | Xiongnu | 10%
|
| 531,616 | -2500--1556 | Indus River Valley Civilization | 9%
|
| 5,557,084 | -550--329 | Achaemenid | 8%
|
| 2,201,544 | 1146-1203 | Jin | 7%
|
| 4,593,613 | 1071-1096 | Seljuk | 7%
|
| 3,476,365 | -301--297 | Seleucid | 6%
|
| 1,031,694 | -1046--900 | Zhou | 6%
|
| 5,137,407 | 251-573 | Sassanid | 5%
|
| 5,202,783 | 573-583 | Göktürks | 4%
|
| 2,621,549 | 937-978 | Liao / Khitan | 2%
|
| 2,747,551 | 910-937 | Samanid | 1%
|
| 2,787,625 | 1127-1146 | Almoravid | 0%
|
| 2,448,518 | 1203-1207 | Ghurid | 0%
|
| 2,989,347 | 1207-1213 | Khwarazm | 0%
|