1 You must wait at least 12 months following the completion of treatment to donate your blood. 2  You cannot have had a recurrence of cancer.  If you are currently in treatment, then you are ineligible to donate.
The Royal Road helped the Persian Empire by uniting the empire, delivering mail,and promoted trade and businessthroughout the empire. When the Royal Road unitedthe empire everything started to happen, the delivered mail and the promotion oftrade and business. The Royal Road was for government purposes.
The history of the Silk Road pre-dates the Han Dynasty in practice, however, as the Persian Royal Road, which would come to serve as one of the main arteries of the Silk Road, was established during the Achaemenid Empire (500-330 BCE).