He built it on the base of the previous Babylonian Empire one.
Darius I.
Zoroastrianism
Darius III.
Son of Cyrus, Ruler of the Persian Empire.
Darius was the Persian ruler beginning in 521 BC.
King Darius I (the Great).
Darius I.
Cyrus the Great, Cambyses, Darius the Great.
Darius I .
Xerxes son of Darius
Darius the Great
Xerxes I of Persia became king of Persia in 486BC and continued his father's campaigns against Greece in the Persian Wars.