Why is Cyrus II known as Cyrus the Great?

Cyrus II is known as "the Great" primarily for his role as the founder of the Achaemenid Empire, which was the largest empire the world had seen at that time, stretching from the Aegean Sea to the Indus River.12

His reputation stems from a combination of factors:

• Military and Diplomatic Skill: He expanded his domain through a strategic mix of conquest and diplomacy, successfully integrating diverse cultures and traditions into his administration.13
• Tolerance and Governance: Unlike many conquerors of his era, Cyrus was known for his tolerance. He supported local customs and deities, notably in Babylonia, and is famously recognized in the Bible as the liberator who allowed the Jewish people to return to their homeland.23
• Legacy and Legend: He was mythologized by ancient historians like Herodotus and Xenophon, who portrayed him as an ideal, benevolent monarch and the "father of his people".12