Muslim conquest of Persia from the Pahlavi scripts to a modified version of the Arabic alphabet. Today Persian is spoken officially in Iran, Afghanistan, and Tajikistan. The Arab conquest of Persia led to a period of extreme urbanisation in Iran, starting with the ascension of the Abbasid dynasty and ending in the 11th century CE. This was particularly true for the eastern parts of the country, for regions like Khorasan and Transoxiana. During this period, Iran saw the development of massive metropolises, some reaching population numbers of up to 200,000 people. Before this period, the important Persian cities had been situated outside of Persia
Previously Unaired Christmas Previously Unaired Christmas "Previously Unaired Christmas" is the eighth episode and fall finale of the fifth season of the American musical television series "Glee", and the ninety-sixth episode overall. It was directed by Wendey Stanzler and written by Ross Maxwell, and it aired on Fox in the United States on December 5, 2013. The episode is the show's fourth Christmas special, but due to season five being set in the same calendar year as season four, it is a non-canonical episode which purports to be the original season four Christmas special, suppressed by Fox. Commentators reacted negatively to this episode,