Which Persian king is noted for his effective leadership?

Cyrus the Great is noted for his effective leadership due to his innovative approach to governance, military strategies, and human rights policies. He founded the Achaemenid Empire and is recognized for uniting the Medes and Persians, creating one of the largest empires in ancient history. His respect for local customs and religions in the territories he conquered helped to stabilize his empire and promote a degree of autonomy among diverse populations.

Moreover, Cyrus is famous for his decree allowing the Jews to return to Jerusalem from Babylonian captivity, which reflects his progressive views on governance and tolerance. His leadership style laid the foundations for future Persian kings like Darius and Xerxes, who built upon his legacy, but Cyrus's initial unity and tolerance were particularly impactful in shaping the empire’s character.