Quick questions on Darius I, accession and the reorganisation of the Persian Empire - HSC Ancient History Historical Periods

Darius answered that challenge with the single most important source for his accession, the Behistun (Bisitun) Inscription. Carved high on a cliff in western Iran within a few years of 522 BC, in three languages (Old Persian, Elamite and Babylonian) and accompanied by a great relief showing Darius with his foot on the fallen Gaumata before a line of nine roped rebel kings, all beneath the winged figure of the god Ahuramazda, it is the founding document of the reign and the longest of all Achaemenid royal inscriptions.

Darius's accession triggered revolts across almost the whole empire, from Elam and Babylon to Media, Persia itself, Egypt and the eastern provinces. Behistun records that Darius and his generals fought 19 battles and captured nine rebel "kings" in a single year (522-521 BC), suppressing the uprisings one by one. Whatever the exact numbers, which are a royal boast rather than an audited count, the scale of the revolts shows how fragile the young empire still was, and how far Darius's later reputation as its great organiser rests on first having reconquered it. Only after crushing these revolts did he turn to systematic reform.

By the end of Darius's reign the empire stretched from the Indus to Thrace and from Central Asia to Egypt and Libya, governed through a standardised system of satrapies, tribute, coinage, roads and inspectors, and displayed in the new capitals at Persepolis and Susa. This is the empire at its administrative height: not merely its largest, but its best organised. The qualification worth keeping is that this height was built over a contested seizure of power and closed on strain, the Ionian Revolt of 499 BC and the Egyptian revolt of 486 BC, which Darius did not live to suppress, showing a system that was highly effective but never wholly secure.