At times, it also corresponded to a single super-province, under a strategos "in charge of the upper satrapies" (Greek: ὁ ἐπί τῶν ἄνω σατραπειῶν, romanized: ho epi tōn anō satrapeiōn).
The Upper Satrapies comprised the entire eastern half of the territories conquered by Alexander: typically everything east of the River Tigris,[1] from the Zagros Mountains in the west to the borders of India in the southeast and Central Asia in the northeast, including the provinces of Media, Persis, Carmania, Drangiane, Hyrcania, Parthia, Margiane, Aria, Baktria, and Sogdiane.
[2] The area initially also included the easternmost conquests of Alexander in India and modern-day Afghanistan and Pakistan (the Paropamisadai, Arachosia, and Gedrosia), but these were definitively lost to Chandragupta Maurya in 303 BC, after his treaty with Seleucus I Nicator.
Although likely not envisioned at the outset as an overarching military command as it later became, Peithon appears to have attempted to gradually impose just such an authority over the local satraps, which led to the latter banding together against him and evicting him in 317 BC.
[9] Nikanor remained in control of the Antigonos' eastern provinces until the invasion of Babylonia by Seleukos I in 312, when he marched to confront him but fell in battle.