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 Silk Road. 1  It was over 4,000 miles long. 2  Marco Polo traveled to China along the Silk Road. 3  Not all that was traded along the Silk Road was good. It is thought that the bubonic plague, or Black Death, traveled to Europe from the Silk Road. 4  Very few merchants traveled along the entire route.