Zoroastrianism was founded by the prophet Zoroaster (or Zarathustra) in ancient Iran approximately 3500 years ago. The precise date of the founding of Zoroastrianism is uncertain. An approximate date of 1200-1500 BCE has been established through archaeological evidence and linguistic comparisons with the Hindu text, the Rig Veda.
Zoroaster Zoroaster was born in Northeast Iran or Southwest Afghanistan.

Full story: bbc.co.uk