The Iranian speaking people inhabited a large area which included a large swath of the Silk Road. Bactrians, Khwarzaminans, Sakas, Sogdians, Parthians and Persians were among the most important of these Iranians who traded and transported goods from China and India to the Eastern Mediterranean. They were also responsible for the spread of such religions as Zoroastrianism, Nestorian Christianity, Buddhism, Manichaeism and Islam throughout Asia. This book provides an overview of the Iranians and their contribution to the development of a vibrant trade and religious life in the first millennium BCE and the First Millennium CE.