Answer:
Darius I, also known as Darius the Great, was the third Persian King of the Achaemenid Empire. His reign served 36 years, from c. 522 to 486 BCE;
- While this time the Persian Empire approached its peak.
- Darius led military campaigns in Europe, Greece, and even in the Indus valley, overcoming lands and growing his empire.
- Not only returning to military courage, but Darius also changed the legal and economic system
- Managed impressive construction projects across the Persian Empire.