Arak, Iran Arak, Iran Arak (, "Arâk"; ), is the capital of Markazi Province, Iran. At the 2011 census, its population was 526,182, in 160,761 families. this city nicknamed as Industrial Capital of Iran. A major industrial city, Arak hosts several industrial factories inside and within a few kilometers outside the city, including the factory of Machine Sazi Arak and the Iranian Aluminium Company. These factories produce nearly half of the needs of the country in steel, petrochemical, and locomotive industries. As an industrial city in a developing country, Arak is subject to the issue of air pollution. The term "Arâk" remains
Name of Iran "Persia" and "Iran" could officially be used interchangeably. However the issue is still debated today. The name "Irān" is first attested in the Avesta as "airyānąm" (the text of which is composed in Avestan, an old Iranian language spoken in northeastern Greater Iran, or in what are now Turkmenistan and Tajikistan). The Modern Persian word "Īrān" () derives immediately from Middle Persian "Ērān" (Pahlavi spelling: "ʼyrʼn"), first attested in an inscription that accompanies the investiture relief of the first Sassanid king Ardashir I at Naqsh-e Rustam. In this inscription, the king's Middle Persian appellation is "ardašīr šāhān šāh ērān" while