The Gathas, Zoroastrianism, and the Ancient World

What was its essential role in ancient history and its lasting legacy today?

Though it was the largest religion in the ancient world by both the number of adherents and geographical scope, Zoroastrianism is still vastly understudied in religion, history, and especially classics.

What is Zoroastrianism? How has this Iranian religion impacted the Classical World? And why is one of the world's oldest organized faiths so often over …