Which regions did the Achaemenid Empire control at its greatest extent?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

At its greatest extent, the Achaemenid Empire was the largest empire the world had known at that time, stretching across vast territories in Africa, Asia, and Europe.1

The empire's reach included the following regions:

To manage this expansive territory, the Achaemenid kings implemented a complex administrative system, dividing the empire into provinces known as satrapies, and utilized the Persian Royal Road to facilitate communication and trade across these diverse regions.13