On this day in ...
... 1934 (75 years ago today), Riza Shah renamed the country he ruled -- long called by the Greco-Roman name Persia -- Iran, the older name for the land. Although the country's official name remains Iran (flag at right), as indicated in this U.N. member state listing, the other term did not fully die out, as noted in this 1965 New York Times article.
(Prior December 27 posts are here and here.)