Postal system in the Islamic State

The postal system was one of the most important systems of the ancient Islamic state. The caliphs and sultans paid great attention to it from the beginning until the end. In doing so, they were only following the example of the Persian kings and the Roman Caesars, who saw this system as one of the strongest pillars of their great king. This book deals with the edges of the subject, and in collecting its material it used the most important references, both Arab and foreign. It recognized the...