Zoroastrianism place of origin

Answer 1

Some scholars, including Mary Boyce, Professor Emerita of Iranian Studies at University of London, conclude that Zoroastrianism began in southern Russia, the area from the Iranian people of today emigrated. Others say that Zoroastrianism may have originated in Central Asia, perhaps in Afghanistan. I find the southern Russia origin more persuasive, not only because the Iranian people originated there, and therefore could have brought the religion with them into eastern Iran, but because of similarities between Zoroastrianism and Hinduism, which could also have originated in southern Russia. Zoroastrianism did not reach the Medes and Persians of western Iran until around the eighth century BCE, leading some to believe that the religion originated there.