Autocratic imperial system centered on emperor's authority with professional administration and standardized laws (27 BCE-476 CE).
Understanding Western civilization roots
1299-1922, Islamic superpower bridging East and West
Understanding East-West relations
The Roman Empire lasted over 1,000 years (27 BC - 476/1453 AD) and laid the foundations of Western civilization. The Ottoman Empire lasted 623 years (1299-1922) and controlled much of Southeast Europe, Western Asia, and North Africa.
The Roman Empire had a greater lasting impact on Western civilization. The Ottoman Empire was one of the longest-lasting and most powerful Islamic empires.
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| Metric | Roman Empire | Ottoman Empire | Diff |
|---|---|---|---|
| Duration(years) | ~1,000+ | 623 | +61% |
| Peak Territory | 5 Million | 5.2 Million | -4% |
| Peak Population(millions) | 70 million (117 CE) | — | — |
| Founding Year(CE) | 27 BCE | — | — |
| Fall Year |
Roman Empire
~1,000+ years
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| 476 CE |
| — |
| — |
| Major Emperors Count(emperors) | 82 emperors | — | — |
| Maximum Territory(million sq km) | ~5 million km² (117 CE) | — | — |
All figures sourced from publicly available data. Last updated Jun 2026.
Ottoman Empire
623 years
Roman Empire
5M km²
Ottoman Empire
5.2M km²
Roman Empire
Western civilization
Ottoman Empire
Eastern Mediterranean
The Roman Empire, counting both Western and Eastern (Byzantine), lasted over 1,000 years. The Ottoman Empire lasted 623 years.
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| Attribute | ||
|---|---|---|
| Duration(years) | ~1,000+ | 623 |
| Founding Year(CE) | 27 BCE | — |
| Fall Year(CE) | 476 CE | — |
| Period of Rule(years) | 27 BCE-476 CE (Western) | — |
| Peak Territory | 5 Million | 5.2 Million |
| Peak Population(millions) | 70 million (117 CE) | — |
| Major Emperors Count(emperors) | 82 emperors | — |
| Number of Consuls(consuls) | 1 emperor (rarely co-emperors) | — |
| Primary Written Script | Latin (uppercase) | — |
| Economic System | Slave-based agricultural economy with trade | — |
| Known Religious Tolerance(percent) | High (pre-Constantine) | — |
| Maximum Territory(million sq km) | ~5 million km² (117 CE) | — |
| Form of Government | Autocratic Monarchy | — |
| Military Legions(legions) | 30-33 legions (peak) | — |
| Senate Size(members) | ~300-600 senators (advisory role) | — |
| Legal Code Development | Codified Roman Law, Justinian Code (529 CE) | — |
| Administrative Provinces(provinces) | ~40-50 organized provinces | — |
Side-by-side comparison of numeric attributes