Uncontacted contemporaries · 503 overlapping years

Roman Empire Teotihuacan

For 503 years — from 27 BCE to 476 CE — both civilizations existed simultaneously. Neither this dataset nor the historical record shows any documented trade, war, or diplomatic contact between them.

100 BCE 550 CE

Roman Empire

27 BCE–476 CE

Teotihuacan

100 BCE–550 CE

↑ Overlap begins, 27 BCE

Roman Empire

Mediterranean basin and Western Europe

At its height governed from Britain to Mesopotamia, leaving lasting legal, architectural, and linguistic legacies.

Teotihuacan

Central Mexico

One of the largest cities in the pre-Columbian Americas, whose founding civilization's identity is still debated.

Traits both developed independently

With no documented contact, any shared trait below represents independent development rather than transmission from one to the other.

Monumental architecture Irrigation agriculture Standing army Long-distance trade Astronomical record-keeping Urban planning

Roman Empire only

Bronze metallurgy
Iron metallurgy
Codified law
Seafaring

Teotihuacan only

No traits unique to Teotihuacan in this comparison.