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A set of balanced scales, representing comparison

Comparisons

Analyze subjects side-by-side to understand their similarities and differences.

Roman Empire vs. Persian Empire
A high-level comparison of two of the most influential empires in ancient history.
Roman Empire
Roman Empire
Persian Empire
Persian Empire
Feature Comparison
FeatureRoman EmpirePersian Empire
Time Periodc. 27 BC – 476 AD (West)c. 550 BC – 651 AD (Sassanian)
GovernmentRepublic, then EmpireMonarchy (Shahanshah)
MilitaryLegions, professional armyCavalry (Cataphracts), Immortals
ReligionPolytheistic, then ChristianityZoroastrianism
Key InnovationConcrete, Aqueducts, RoadsWindmills, Postal System
Capital CityRome, ConstantinoplePersepolis, Ctesiphon