🛠️ Invention or technique

Persian Royal Road and relay post

Camino Real persa y red de postas (angarium)

Date
c. 500 BCE · confidence medium
Place
Susa, Khuzestan, Iran
Credited to
Darius I (Achaemenids)
People
👤 Darío I550 BCE–486 BCE
Field
Communication

What it is

Roughly 2,700 km road between Susa and Sardis with 111 relay stations, where mounted couriers passed on messages and covered in about seven days what took three months on foot. Herodotus described it, and the Persepolis tablets record its rations.

Part of the route reuses Assyrian roads; the relay system (angarium) is documented in the Persepolis fortification tablets.

What it led to

  • centralised government of the first world empire
  • model for the Roman cursus publicus and the Islamic barid
  • long-distance trade across Anatolia and Mesopotamia
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