Roman Empire vs Mongol Empire
At its height the Mongol Empire (about 24 million km² in 1270) was about 5 times the size of the Roman Empire (about 5.0 million km² in 117 CE). The Roman Empire lasted about 502 years (27 BCE to 476 CE), the Mongol Empire about 162 (1206 to 1368). They never existed at the same time: the Mongol Empire began 730 years after the Roman Empire ended.
| Roman Empire | Mongol Empire | |
|---|---|---|
| Began | 27 BCE | 1206 |
| Ended | 476 CE | 1368 |
| Lasted | about 502 years | about 162 years |
| Largest extent | about 5.0 million km² (117 CE) | about 24 million km² (1270) |
| Share of the world’s land | 3.4% | 16.1% |
| Capital | Rome | Karakorum |
Roman Empire
From Augustus in 27 BCE, Rome ruled the whole Mediterranean world and reached its largest extent under Trajan in 117 CE. The western half fell in 476; the eastern half lived on as the Byzantine Empire.
Began 27 BCE: Augustus becomes emperor. Ended 476 CE: the last western emperor is deposed; the eastern half lives on as the Byzantine Empire.
On the history map: World map in 1 BCE, World map in 200 CE, World map in 400 CE
Mongol Empire
Founded when Temüjin was proclaimed Genghis Khan in 1206, it became the largest contiguous land empire in history. By the 1260s it had split into four khanates: the Yuan, the Golden Horde, the Chagatai Khanate and the Ilkhanate.
Began 1206: Temüjin is proclaimed Genghis Khan. Ended 1368: the Yuan dynasty is driven out of China.
On the history map: World map in 1279 CE, World map in 1300 CE
More comparisons
- Roman Empire vs Han dynasty — about 5.0 million km² vs about 6.0 million km²
- Roman Empire vs Byzantine Empire — about 5.0 million km² vs about 2.7 million km²
- Roman Empire vs Ottoman Empire — about 5.0 million km² vs about 5.2 million km²
- Roman Empire vs Achaemenid Empire — about 5.0 million km² vs about 5.5 million km²
- Roman Empire vs British Empire — about 5.0 million km² vs about 36 million km²
- Mongol Empire vs British Empire — about 24 million km² vs about 36 million km²
- Mongol Empire vs Russian Empire — about 24 million km² vs about 23 million km²
- Ottoman Empire vs Byzantine Empire — about 5.2 million km² vs about 2.7 million km²
- Ottoman Empire vs Mughal Empire — about 5.2 million km² vs about 4.0 million km²
- Ottoman Empire vs Russian Empire — about 5.2 million km² vs about 23 million km²
- Achaemenid Empire vs Macedonian Empire — about 5.5 million km² vs about 5.2 million km²
- Han dynasty vs Tang dynasty — about 6.0 million km² vs about 5.4 million km²
- Tang dynasty vs Abbasid Caliphate — about 5.4 million km² vs about 11 million km²
- Umayyad Caliphate vs Abbasid Caliphate — about 11 million km² vs about 11 million km²
- British Empire vs Spanish Empire — about 36 million km² vs about 14 million km²
- Spanish Empire vs Inca Empire — about 14 million km² vs about 2.0 million km²
Compare empires · The interactive history atlas
Largest extents are the widely cited estimates by Rein Taagepera and others, as listed in Wikipedia’s List of largest empires. Dates are the conventional ones; several are debated. Shares are of the world’s land area, about 148.9 million km².