The Persian Empire maintained control over its Greek subjects through indirect rule, propping up local strongmen known as 'tyrants.' These rulers were loyal to Persia because the empire was their sole source of power, making them effective but vulnerable puppets against a populace that resented them.

The official account of Darius's rise to power involves him deposing a magical imposter who looked exactly like the murdered royal heir, Bardia. Historians believe this is a highly improbable cover story for what was actually a violent coup where Darius himself murdered the legitimate heir to seize the throne.

Darius portrayed himself as an agent of cosmic truth and order ('Arta'). He branded enemies not just as political opponents but as agents of a universal lie ('Drauga'), turning rebellion into a moral and religious crime that demanded punishment and legitimized his rule.

Beyond military power, mass consumption of goods created a shared universe that bound the empire together. This economic activity produced knock-on effects that sustained the tax apparatus, creating a symbiotic relationship between widespread commerce and state power.

Openness is a tool for dominance, not just a moral virtue. The Romans became powerful by being strategically tolerant, quickly abandoning their own methods when they found better ones elsewhere. This allowed them to constantly upgrade their military, technology, and knowledge from conquered peoples.

By casting their empire as a reflection of cosmic order, the Persians implicitly defined all outside peoples as living in a state of chaos and 'the lie.' This created an ideological justification for perpetual conquest, as bringing foreigners into the empire was framed as a moral duty to spread universal truth.

Facing widespread rebellions after a questionable rise to power, Darius used extreme, performative cruelty. The systematic mutilation and mass impalement of rebels were not random acts of rage but calculated displays of terror designed to crush dissent and establish his authority as absolute and unchallengeable.

While the ruling Taira clan extracted resources from starving provinces to feed the capital, their rival Yoritomo ostentatiously sent food aid from his granaries. This act of strategic generosity made the populace see him as a provider, eroding Taira support and bolstering his own prestige without a single battle.

The sacking of the Persian city of Sardis by the Athenians was a shocking affront to King Darius, the world's most powerful man. This act of aggression by a little-known group created an insult so profound that a massive military response became politically necessary to maintain credibility.