The peoples within the Empire continued to practice their own religions. - the Greeks, the Phoenicians, the Egyptians, etc. The upper class Persians had a cult of Zoroastrianism, but this was a small minority compared with the others.
The Persian Empire
zoroastian
ZOROASTRIAN
Today's Parsees, who follow the Zoroastrian religion of its founder Zarathustra.
Zoroastrianism was the new religion that developed during Darius's rule of the Persian Empire. It was founded by the prophet Zoroaster (Zarathustra) and emphasized the worship of Ahura Mazda as the supreme deity and the belief in a cosmic struggle between good and evil.
Zarathustra was a Persian prophet since his family originated from Persia. Although he ran away, his teachings were spread around the Persian Empire first. Persian nobles and Persian aristocrats embraced the new religion first and allowed the religion to blossom.
The Assyria Empire took over the Babylonian Empire when it fell.
As supreme ruler of the Aztec Empire, Montezuma was the chief priest of the Aztec religion.
Zoroastrianism was the dominant religion practiced in the Persian Empire. It was founded by the prophet Zoroaster and emphasized concepts of duality between good and evil, free will, and the worship of one supreme deity, Ahura Mazda.
The Persian Empire introduced the religion of Zoroastrianism, founded by the prophet Zoroaster (who is also known as Zarathustra). The religion of Zoroastrianism has been almost completely extinguished in Persia (which is now Iran) by Islam, however it does survive in India, where immigrants from Persia are known as Parsis, and the religion has become known as Parsi.
The Persian Empire.
The Persian Empire was not a person.