Al-Ahvaz, Al-Ahwaz, or Arabistan are controversial names for one land, including the Arab region adjacent to Iraq that also overlooks the northern Arabian Gulf.
These names started to appear with the growing political movement against the government in Iran. Until the year 1925, this province was a semi-independent emirate governed by Sheikh Khazaael bin Jaber al-Kaabi, known by "Emir Arabistan" before the father Shah Reza Pahlavi invaded the region militarily and detained Sheikh Khazaael, and then he added the province regardless of the will of his Arab people.
As a result, the historians and geographers started calling the Gulf region, the Arab. Perhaps the oldest Arab source that spelled Ahvaz with the letter "h" is the book on the history of Al-Tabari. Money and silver and gold coins are abundant in different museums reflecting the eras of the Umayyad and the Abbasid. These acted as a financial proof for the name "Ahvaz".
However, the Iranian rule at the time of the Shah and the rule of the mullahs changed the names of cities, districts, and streets in the region in an attempt that seemed to fail to eliminate the Arab roots of the population.