| Rank | Year | Empire | Area | % Correct |
|---|---|---|---|---|
| 2 | 1309 | Mongol Empire | 24,000,000km2 | 88%
|
| 5 | 1810 | Spanish Empire | 13,700,000km2 | 80%
|
| 1 | 1920 | British Empire | 35,500,000km2 | 78%
|
| 3 | 1895 | Russian Empire | 22,800,000km2 | 75%
|
| 6 | 1920 | Second French Colonial Empire | 11,500,000km2 | 75%
|
| 12 | 1942 | Empire of Japan | 7,400,000km2 | 68%
|
| 20 | 500 BC | Achaemenid Empire | 5,500,000km2 | 55%
|
| 4 | 1790 | Qing Dynasty | 14,700,000km2 | 55%
|
| 11 | 1889 | Empire of Brazil | 8,300,000km2 | 38%
|
| 15 | 1450 | Ming Dynasty | 6,500,000km2 | 38%
|
| 8 | 720 | Umayyad Caliphate | 11,100,000km2 | 35%
|
| 7 | 750 | Abbasid Caliphate | 11,100,000km2 | 23%
|
| 18 | 1310 | Golden Horde Khanate | 6,000,000km2 | 23%
|
| 9 | 1310 | Yuan Dynasty | 11,000,000km2 | 23%
|
| 13 | 1640 | Iberian Union | 7,100,000km2 | 15%
|
| 16 | 655 | Rashidun Caliphate | 6,400,000km2 | 15%
|
| 14 | 100 | Eastern Han Dynasty | 6,500,000km2 | 10%
|
| 10 | 176 BC | Xiongnu Empire | 9,000,000km2 | 10%
|
| 17 | 557 | Göktürk Khaganate | 6,000,000km2 | 8%
|
| 19 | 50 BC | Western Han Dynasty | 6,000,000km2 | 5%
|