Who the Persians were
The Persians were an Iranian-speaking people from Fars (Pars) in the south-west of the Iranian plateau. Under a dynasty named after a semi-legendary ancestor, Achaemenes, they built the largest empire the Near East had yet seen. Cyrus the Great began the process around 550 BCE, and the empire lasted until Alexander’s armies overran it in the early 330s BCE. At its height it stretched, roughly, from the Aegean coast and Egypt in the west to the Indus region in the east.
Much of what is popularly “known” about the Persians comes from their Greek opponents, who wrote with an obvious bias. Modern scholars therefore combine Greek authors such as Herodotus with Persian royal inscriptions, Babylonian and Egyptian records, and archaeology. The picture that emerges is of a sophisticated, adaptable state rather than the despotic caricature found in some Greek writing.
How the empire was run
The Achaemenid kings took over ideas from the older Mesopotamian empires, including the Assyrian Empire, and then refined them. Under Darius I (reigned about 522 to 486 BCE) the realm was organised into provinces under governors called satraps, who answered to the king. Taxes were collected in silver and in kind, and a system of roads and way stations moved officials and messages. These mechanisms are explored in more detail elsewhere on this site; the important point here is that the empire worked largely by keeping local institutions in place and supervising them from above.
Language policy followed the same pragmatic logic. Royal monuments were often written in three languages, Old Persian, Elamite and Babylonian, while Aramaic became the everyday language of imperial correspondence from Egypt to Central Asia. Old Persian had its own cuneiform-style script, apparently created for royal inscriptions, and it should not be confused with the older tradition of cuneiform writing used for Akkadian and Sumerian.
Silver was widely weighed out as payment, and the Persian kings issued gold darics and silver sigloi, a coinage that built on the Lydian gold coinage the Persians encountered after conquering Lydia.
Tolerance, with limits
The Achaemenids are often praised for religious and cultural tolerance. There is real evidence behind this. The Cyrus Cylinder, a Babylonian-language clay text, presents Cyrus as restoring cults and returning displaced images to their sanctuaries after the fall of Babylon in 539 BCE. The Hebrew Bible credits Persian kings with allowing exiles to return to Judah and rebuild their temple. Egyptian sources show Persian rulers supporting local temples.
Two cautions apply. First, the Cylinder is a royal statement written in a Babylonian idiom, so it is propaganda as much as policy, and it is not a modern human rights charter, as it is sometimes described. Second, tolerance was a tool of rule. Rebellions in Babylon, Egypt and Ionia were put down firmly, and temples and cities that resisted could be punished. Persian tolerance meant respect for local custom so long as taxes, soldiers and loyalty kept flowing.
The king and the court
At the top stood the “king of kings”, whose authority the inscriptions present as granted by Ahura Mazda. Around him was a court of Persian and Median nobles, royal officials, guards and household staff. Herodotus, writing in Greek, describes the elite upbringing of Persian boys as training to ride, to use the bow and to tell the truth. That is a Greek observer’s summary, and it should be read as a stereotype, but the emphasis on horsemanship and archery fits the empire’s military culture, which relied heavily on cavalry and mounted archer warfare drawn from Iranian and steppe traditions.
The court did not sit in one place. Kings moved between Susa, Babylon, Ecbatana and the Persian heartland, using each at different seasons. Susa, the city of Susa in south-west Iran, served as a main administrative residence, and Persepolis and Pasargadae in Fars were tied to Persian royal identity. A royal guard, called the Immortals in Greek accounts because its ranks were kept at a constant number, accompanied campaigns. Herodotus gives its strength as ten thousand, a figure that should be treated cautiously.
Women, workers and everyday people
Royal women of the dynasty owned estates and sometimes travelled with large retinues, and administrative tablets from Persepolis show women among the workers who received rations. The tablets also show a diverse workforce of skilled craftspeople and labourers drawn from across the empire, paid in food, wine, beer or silver. This corrects the notion that grand monuments were built only by enslaved or unpaid gangs, although some forced labour and deportation certainly existed in the ancient Near East and cannot be ruled out here.
Religion
The royal inscriptions of Darius and Xerxes give great prominence to the god Ahura Mazda, who is credited with granting kingship. Many scholars connect this with Zoroastrian tradition, but how far the Achaemenid court followed what later became Zoroastrian orthodoxy is debated. The evidence suggests a royal religion centred on Ahura Mazda alongside other Iranian gods, while ordinary subjects across the empire kept their own cults.
Art and architecture
Achaemenid art was deliberately composite. Its palace reliefs echo the Assyrian palace reliefs of earlier centuries, its column forms owe something to Egypt, and its stone-working drew on Greek and Anatolian craftsmen, while its own contribution was a calm, formal court style. The ceremonial platform at Persepolis is the best-known showcase, with its audience hall, processions of figures and carved guardian bulls, but royal building also took place at Pasargadae, Susa and Babylon.
The Persians were famous for walled gardens, for which the Old Persian word is the source of the English “paradise”. Descriptions of royal parks appear in Greek writers, and excavated garden layouts at Pasargadae suggest the idea was real.
Conflict with the Greeks and the end of the dynasty
Persia’s wars with the Greek world, including the Greco-Persian conflict that began with the Ionian Revolt around 499 BCE and ran to the 470s, loom large in later European memory. From the Persian side they were border campaigns at the western edge of a huge empire. Their long-term effect was greater in Greek history than in Persian. The end came in a different way: Alexander of Macedon defeated Darius III in a series of battles, culminating in the clash usually remembered as Alexander versus Darius at Gaugamela in 331 BCE. Darius III was killed by his own officers in 330 BCE.
Afterlife of Persian imperial culture
Persian imperial culture left a durable template. The Seleucid and Parthian states inherited parts of their administration, and the later Sasanian dynasty (from the third century CE) claimed to restore an earlier Iranian greatness, although its direct knowledge of the Achaemenids was thin. The concept of a “king of kings” ruling many nations, the use of a lingua franca for administration and the practice of governing through local elites all reappear in later empires.
In Iran today Persepolis and the tombs at Naqsh-e Rustam are valued as heritage sites, and the Persian language and traditions of the region remain living ones, not relics. Archaeology continues to add detail, particularly through administrative tablets, which show how ordinary the daily business of empire could be.