10 things you probably didn’t know about Iran

They invented the postal service: It’s probably safe to assume that as long as there’s been writing, there’s been correspondence. But it is widely believed that the first real postal system was also invented in Ancient Persia around 550 BC, under the rule of Cyrus the Great. The Persian ruler mandated that every province in his kingdom organize delivery and reception of post for its citizens, had roads especially built across the country for the purpose and even convinced neighboring countries to do the same.