Armenia under Foreign Rule: Achaemenid, Hellenistic, Roman, and Parthian Periods
What to master
After Urartu, the Armenian Highland came under Median then Achaemenid Persian control (satrapy of Armina, mentioned in the Behistun inscription of Darius I). Candidates must understand the Orontid (Yervanduni) dynasty as the first attested Armenian ruling house, initially as Achaemenid satraps, and the emergence of the Kingdom of Armenia in the Hellenistic world after Alexander. Know the Artaxiad (Artashesian) dynasty, founded by Artaxias I (early 2nd century BCE), and Tigranes II the Great, who built an empire briefly reaching the Caspian to the Mediterranean before defeat by Rome (Lucullus, then Pompey, 66 BCE) and acceptance of Roman overlordship. Understand the long Roman–Parthian rivalry over Armenia, the treaty arrangements making Armenia a buffer/client kingdom, and the Arsacid (Arshakuni) takeover of the Armenian throne in the 1st century CE, closely tied to the Parthian Arsacids.
Traps
Do not date the Orontids to a single fixed century-their origins are debated and they straddled the Achaemenid–Hellenistic transition. Do not confuse Tigranes II with Tigranes the Great's capital Tigranocerta's location (a debated site). Do not treat Roman "client king" status as annexation; Armenia usually retained a king under Roman or Parthian sponsorship.
Rule of thumb
Read Armenian politics of this era as a function of the Rome–Parthia balance: whichever power dominated the region shaped the Armenian throne.
Worked example
Asked why Armenia oscillated between Rome and Parthia, answer with its buffer geography and the absence of a durable great-power monopoly-not with internal Armenian weakness alone.