Lower PaleolithicMiddle PaleolithicUpper PaleolithicEpi PaleolithicNeolithicProto UrbanismUrbanismInvention of WritingElamitesMedesAchaemenidsSeleucidsParthians(248BC-226AD)Sassanids(224-633AD)Governing of Caliphs(11-41AH)Omavids(41-132AH)AbbasidsTahirids(205-259AH)Saffarids(261-287AH)SamanidsAlavids(250-316AH)Ziarids(315-462AH)Buyids(320-440AH)Ghaznavids(388-555AH)Ismailids(473-654AH)Kharazm Shahids(470-617AH)Mongolian(654-736AH)TimuridsSafavidsAfghan InventionAfsharidsZandsSaljoqidsQajarsPahlavisIslamic Republic of Iran