Why did the Ionian Greeks revolt against Persia in 499 BC, why did the revolt fail, and why did it bring Persia and mainland Greece into conflict?
The Ionian Revolt 499 to 494 BC: its causes, the roles of Aristagoras and Histiaeus, Athenian and Eretrian involvement, the burning of Sardis, the Persian suppression and the sack of Miletus, and its significance for the outbreak of the Persian Wars.
An OCR A-Level Ancient History period study guide to the Ionian Revolt of 499 to 494 BC. Covers the causes of the revolt, the roles of Aristagoras and Histiaeus, Athenian and Eretrian help, the burning of Sardis, the Persian reconquest and sack of Miletus, and why Herodotus makes it the trigger of the wider Persian Wars.
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What this dot point is asking
The Ionian Revolt of 499 to 494 BC is the hinge of the period study: it is the rebellion of the Greek cities of Asia Minor against Persian rule, and the moment that drew mainland Greece into conflict with Persia. This page covers its causes, the roles of Aristagoras and Histiaeus, the help sent by Athens and Eretria, the burning of Sardis, the Persian reconquest and the sack of Miletus, and why Herodotus presents it as the trigger of the wider Persian Wars.
The answer
The causes and the role of Aristagoras
The period study expects you to separate long-term causes (grievance against the tyrannies, the burden of Persian rule) from the immediate trigger (Aristagoras's self-preservation). Herodotus's heavy focus on individual motives is itself a point for analysis: it may oversimplify a broader Ionian discontent into a story of a few ambitious men.
The burning of Sardis and mainland help
In 498 BC the rebels, joined by twenty ships from Athens and five from Eretria, marched inland and burned Sardis, the seat of the western satrapy. The act was militarily inconclusive (the rebels withdrew and were defeated) but politically explosive:
- It gave Darius a direct grievance against Athens and Eretria, the mainland cities that had dared to help his rebellious subjects.
- Herodotus famously says Darius had a servant remind him three times at dinner to "remember the Athenians", framing the burning of Sardis as the root of the later wars.
The mainland help was small and short-lived, but it is the thread that connects the Ionian Revolt to the invasion of Greece.
The Persian reconquest and the sack of Miletus
The suppression restored Persian control of the coast but left Darius with unfinished business on the mainland. The revolt therefore failed in Ionia yet succeeded in setting Persia and Greece on a collision course.
Examples in context
A model answer keeps the trigger and the deeper causes distinct, and points out that the whole narrative depends on a single, retrospective source.
Try this
Q1. Assess the significance of the Ionian Revolt for the outbreak of the Persian Wars. [20 marks, period essay style]
- What the marker wants. An AO1 and AO2 argument that the burning of Sardis and Athenian and Eretrian involvement gave Darius both grievance and target, leading to Marathon in 490 BC, with a judgement on how decisive the revolt was as a cause.
Q2. How much help did mainland Greece send to the Ionian Revolt? [2 marks]
- Cue. Twenty ships from Athens and five from Eretria, a small and short-lived contribution that nonetheless provoked Darius's lasting hostility.
Exam-style practice questions
Practice questions written in the style of OCR exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.
OCR H407/11 201920 marksAssess the reasons why the Ionian Revolt broke out in 499 BC. [shown at the 20-mark period essay cap]Show worked answer →
A Section A 20-mark period essay (AO1 and AO2). Rank the causes and judge.
Factors. Resentment of Persian-backed tyrannies in the Ionian cities; the economic strains of Persian control; the personal ambition and self-preservation of Aristagoras after the failure of the Naxos expedition; and the encouragement (Herodotus alleges) of Histiaeus.
Judgement. The best answers argue that underlying Ionian grievances made revolt possible, but the trigger was Aristagoras's need to escape the consequences of the failed Naxos venture, so personal and structural causes combined. The top level distinguishes long-term causes from the immediate trigger and notes that Herodotus's stress on individuals (Aristagoras, Histiaeus) may oversimplify.
OCR H407/11 202312 marksHow useful are Herodotus Books 5 and 6 for understanding why the Ionian Revolt failed? [shown at the 12-mark source-utility cap]Show worked answer →
A Section A 12-mark source-utility question (AO3).
Value. Herodotus is the only continuous narrative of the revolt, written within living memory, with detail on the burning of Sardis, the campaigns and the decisive sea battle at Lade and the sack of Miletus in 494 BC.
Limitations. His account is shaped by hindsight (he knows the revolt failed and frames it accordingly), by a focus on individuals and their motives, and arguably by a degree of disapproval of the rebels' leadership; the disunity of the Ionians may be exaggerated to explain the defeat.
Judgement. Indispensable as the main source and for the course of the war, but its individualising and retrospective shaping must be allowed for. Top answers judge usefulness for the specific enquiry.
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Sources & how we know this
- OCR A Level Ancient History H407 specification — OCR (2017)
- Herodotus, Histories, Books 5 and 6 — Perseus Digital Library