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.
Inca Road System. Another thing that was very important to the Inca was their roads. Since they lived in the mountains it was very hard for the Inca to get around. To deal with this problem the Inca built roads.A lot of roads. Although we do not exactly know how much terrain they covered, it is estimated that there are 40,000 kilometers of Inca roads in the Andes. Most roads were paved and made of stone but the some were simply dirt roads that were still successful roads however.nother thing that was very important to the Inca was their roads. Since they lived in the mountains it was very hard for the Inca to get around.