Parthian language in the context of "Sultanate of Rum"

The Iranian languages, or the Iranic languages, are a branch of the Indo-Iranian languages in the Indo-European language family that are spoken natively by the Iranian peoples, mainly in the Iranian Plateau.

The Iranian languages are grouped in three stages: Old Iranian (until 400 BCE), Middle Iranian (400 BCE – 900 CE) and New Iranian (since 900 CE). The two directly attested Old Iranian languages are Old Persian (from the Achaemenid Empire) and Old Avestan (the language of the Avesta). Avesta predates Old Iranian language, Old Avestan (c. 1500 – 900 BCE)[8] and Younger Avestan (c. 900 – 400 BCE).[9] Of the Middle Iranian languages, the better understood and recorded ones are Middle Persian (from the Sasanian Empire), Parthian (from the Parthian Empire), and Bactrian (from the Kushan and Hephthalite empires).

In Greco-Roman geography, Iberia (Ancient Greek: Ἰβηρία Iberia; Latin: Hiberia; Parthian: wurğān; Middle Persian: wiručān) was an exonym for the Georgian kingdom of Kartli or Iveria (Georgian: ქართლის სამეფო or ივერიის სამეფო), known after its core province. The kingdom existed during Classical Antiquity and the Early Middle Ages, either as an independent state or as a dependent of larger empires, notably the Sassanid and Roman empires. Iberia, centered on present-day eastern Georgia, was bordered by Colchis in the west, Caucasian Albania in the east and Armenia in the south.

Its population, the Iberians (Iverians), formed the nucleus of the Kartvelians (i.e., Georgians). Iberia, ruled by the Pharnavazid, Artaxiad, Arsacid and Chosroid royal dynasties, together with Colchis to its west, would form the nucleus of the unified medieval Kingdom of Georgia under the Bagrationi dynasty.

Parthia (Old Persian: 𐎱𐎼𐎰𐎺 Parθava; Parthian: 𐭐𐭓𐭕𐭅 Parθaw; Middle Persian: 𐭯𐭫𐭮𐭥𐭡𐭥 Pahlaw) is a historical region located in northeastern Greater Iran. It was conquered and subjugated by the empire of the Medes during the 7th century BC, was incorporated into the subsequent Achaemenid Empire under Cyrus the Great in the 6th century BC, and formed part of the Hellenistic Seleucid Empire after the 4th-century BC conquests of Alexander the Great. The region later served as the political and cultural base of the Eastern Iranian Parni people and Arsacid dynasty, rulers of the Parthian Empire (247 BC – 224 AD). The Sasanian Empire, the last state of pre-Islamic Iran, also held the region and maintained the seven Parthian clans as part of their feudal aristocracy.

Arya (Avestan: 𐬀𐬌𐬭𐬌𐬌𐬀, airiia; Old Persian: 𐎠𐎼𐎡𐎹, ariyaʰ; Middle Persian: 𐭠𐭩𐭫‎, er; Parthian: 𐭀𐭓𐭉‎, ary; Bactrian: αρια, aria) was the ethnonym used by Iranians during the early History of Iran. In contrast to cognates of Arya used by the Vedic people and Iranic steppe nomads, the term is commonly translated using the modern ethnonym Iranian.

During Old Iranian times, the term was connected with one's lineage, with speaking an Iranian language and with the worship of Ahura Mazda. Being an Arya, therefore, had ethnic, linguistic and religious aspects. During the Middle Iranian period, it acquired a distinct political aspect through the concept of Eran Shahr (Aryas' dominion). Arya was also contrasted with Anarya (Avestan: 𐬀𐬥𐬀𐬌𐬭𐬌𐬌𐬀, anairiia; Middle Persian: 𐭠𐭭𐭩𐭥‎, aner), denoting non-Iranian lands and peoples.

Artabanus IV, also known as Ardavan IV (Parthian: 𐭓𐭕𐭐𐭍), incorrectly known in older scholarship as Artabanus V, was the last ruler of the Parthian Empire from c. 213 to 224. He was the younger son of Vologases V, who died in 208.

Artabanus IV rebelled against his brother, Vologases VI, a few years after the latter succeeded their father as king. He was able to take control of most of the Parthian territories, although his brother continued to rule over a reduced principality. He fought off an invasion by the Roman emperor Caracalla in 217, preserving Parthian control over most of Mesopotamia. He then faced a rebellion in Pars by Ardashir, a local dynast. Artabanus's and Ardashir's armies met in April 224 at the Battle of Hormozdgan, where Artabanus was killed and his army was defeated. Ardashir then went on to conquer the rest of the Parthian Empire, inaugurating the rule of the Sasanian dynasty over Iran.