Impact of changes in economic conditions in the Achaemenid coins old world (fifth and fourth centuries BC. M.)

Before inventing and emerging the coin, barter transaction was done. Upon emerging the coin, that is one of the research resources in the history, discipline in transactional and economic affairs, more communication of the people and nations with each other, trying for developing international trades and paying attention to improve the circumstances were resulted. The coins were made of different metals and regarded the greatest invention after the script as believed by scientists. The oldest known coin in the world belonged to Senakhrib, king Ashur, which was made about the year 700 A.H and after Ludieh victory, the Kerososi coins developed in Iran by the Achaemenid dynasty of Cyrus. The opportunity for minting coins was not attained at the age of Cyrus and Khashayar Shah, but one of the actions of Darius I was the minting coins from gold and silver named Daryek, meaning Darius and was the oldest Iranian coin. Then, the other countries started to mint coin. The coin are made by two ways: moulding and minting. Cerpersi Saiksess said that " Darius I was an Iranian king started to mint coin at the age of the Achaemenian. No local rulers and kings had the authority to mint coin for their own names without Darius 's permission. The image on the coin indicates that it is related to which one of the Achaemenid king and also identifies the coin name.