The 1st credible claim for the event of a true communication system comes from Ancient Persia, however the purposeof invention remains in question. The best documented claim (Xenophon) attributes the invention to the Persian King Cyrus the Great (550 BC), World Health Organization mandated that each province in his kingdom would organize reception and delivery of post to every of its citizens. He conjointly negotiated with near countries to try and do constantand had roads engineered from town of Post in Western Iran all the far to the city of Hakha in the East. Other writers credit his successor Darius I of Persia (521 BC). Other sources claim much earlier dates for associate Assyrian communication system, with credit given to Hammurabi (1700 BC) and Sargon II (722 BC). Mail might not are the firstmission of this postal service, however. The role of the system as an intelligence gathering equipment is well documented, and also the service was (later) called angariae, a term that in time came to point a tax system. The Old Testament (Esther, VIII) makes mention of this system: Ahasuerus, king of Medes, used couriers for human action his decisions.
The Persian system worked on stations (called Chapar-Khaneh), where the message carrier (called Chapar) would ride to the next post, whereupon he would swap his horse with a fresh one, for maximum performance and delivery speed. Herodotus described the system in this way: “It is said that as many days as there are in the whole journey, so many are the men and horses that stand along the road, each horse and man at the interval of a day’s journey; and these are stayed neither by snow nor rain nor heat nor darkness from accomplishing their appointed course with all speed”. The verse prominently features on New York’s James Farley Post Office, although it has been slightly rephrased to Neither snow nor rain nor heat nor gloom of night stays these couriers from the swift completion of their appointed rounds.