Analysis of information sources in references of the Wikipedia article "ประเทศอิหร่าน" in Thai language version.
Similarly the collapse of Sassanian Eranshahr in AD 650 did not end Iranians' national idea. The name 'Iran' disappeared from official records of the Saffarids, Samanids, Buyids, Saljuqs and their successor. But one unofficially used the name Iran, Eranshahr, and similar national designations, particularly Mamalek-e Iran or 'Iranian lands', which exactly translated the old Avestan term Ariyanam Daihunam. On the other hand, when the Safavids (not Reza Shah, as is popularly assumed) revived a national state officially known as Iran, bureaucratic usage in the Ottoman empire and even Iran itself could still refer to it by other descriptive and traditional appellations.
Nowruz, an ancient spring festival of Persian origin (and the Zoroastrian New Year's day)...
