important postal service was created in the Islamic world by the caliph Moàvia. This service was called berid, by the name of the towers that were built in order to protect the roads by which couriers travelled.
Well before the Middle Ages and during them, carrier pigeons were used, taking advantage of a singular quality of this bird, that when taken far from its nest is able to find his way home due to a particularly developed sense of orientation. Messages were then tied around the legs of the pigeon that was freed and he was set free so he could reach his original nest. Dr. Kaleel Kasem, author and historian said:
The question whether Islam is in clash with western civilization, it is western civilization, it produced the western civilization in Italy, in Sicily and Spain, it produced the check, the bank, the hospital, the sciences, the first air mail, the post office, and the use of mathematics.