Each country has its own history in which the events and ups and downs of that country are recorded. But countries also have parts of history that they have in common. An international incident or a transnational incident in the past caused countries to have common ground in parts of the history. The Silk Road and trade at that time are common points of history between Iran and Kazakhstan. The Silk Road, which started in the east of China, went west, and divided into two major international routes, one passing through Iran and the other passing through Kazakhstan. The Silk Road in Iran and Kazakhstan had structures that facilitate the passage of caravans, including caravanserais. Iranian cities had an acceptable performance in this particular case. One of the most important tools needed to create an efficient administrative structure and oversee the country's affairs has been to build communication channels. The royal road is an example of this communication route that was created in the Achaemenid period to connect different parts of the country.