takhti sangin tajikistan greco bactrian kingdom rd nd century bce classical antiquity tomb cyrus great pasargadae iran roots zoroastrianism thought lie common prehistoric indo iranian religious system dating back early nd millennium bce prophet zoroaster though traditionally dated th century bce thought many modern historians reformer polytheistic iranian religion lived th century bce ref name atlas patrick karl o'brien ed https booksgooglecom booksid ffzy tdjaukc pg pa dq ''atlas world history'' concise edn ny oxford ref zoroastrianism religion firmly established several
Humanities Theology Zoroastrianism