fertile Nisaean plain. The ancient geographer and historian Strabo wrote that it was "(re-)founded" by Achaemenid King Xerxes the Great (486–465 BC). It lay kilometers from Ecbatana (modern-day Hamadan), on the trunk road from Babylonia through Media to Bactria. In the Seleucid period, Nahavand was turned into a Greek polis with magistrates and a Seleucid governor. In the 20th century, a stone stele was found near Nahavand. The stele bore a copy of the dynastic cult inscription of Seleucid ruler Antiochus III the Great (222–187 BC), which he had created for his wife Queen Laodice III. The stele, dated to 193 BC, revealed the terminus ante quem of the foundation of the Greek polis Laodiceia. According to the polymath Abu Hanifa Dinawari, who flourished in the 9th century, in the Parthian period, Nahavand was the seat of the Parthian prince Artabanus, who later reigned as Artabanus I of Parthia (127-124/3 BC). During the Sasanian period, the district of Nahavand was bestowed upon the House of Karen. There was also a fire temple. In 642, during the Arab conquest of Iran, a famous battle was fought at Nahavand. With heavy losses on both sides, it eventually resulted in a Sasanian defeat, and as such, opened up the doors of the Iranian plateau to the invaders. In the early Islamic period, Nahavand flourished as part of the province of Jibal. It first functioned as administrative center of the Mah al-Basra ("Media of the Basrans") district. Its revenues were reportedly used for the payment of the troops from Basra that were stationed in Nahavand. Medieval geographers mention Nahavand as an affluent commercial hub with two Friday mosques. When the 10th century Arab traveller Abu Dulaf travelled through Nahavand he noted "fine remains of the [ancient] Persians". Abu Dulaf also wrote that during the reign of Caliph al-Ma'mun (813–833), a treasure chamber had been found, containing two gold caskets. In the course of the subsequent centuries, only few events in Nahavand were recorded. The Persian vizier of the Seljuk Empire, Nizam al-Mulk, was assassinated in 1092 near Nahavand. According to the historian and geographer Hamdallah Mustawfi, who flourished in the 13th and 14th centuries, Nahavand was a town of medium size surrounded by fertile fields where corn, cotton and fruits were grown. Mustawfi added that its inhabitants were mainly Twelver Shia Kurds. In 1589, during the Ottoman-Safavid War of 1578-1590, Ottoman General Cığalazade Yusuf