How did Cyrus the Great turn a minor kingdom into the largest empire the world had yet seen?
The rise of Cyrus the Great and the foundation of the Persian empire: the conquest of Media, the defeat of Croesus of Lydia and the capture of Babylon, and how the Cyrus Cylinder presents his policy towards conquered peoples.
A focused answer to the rise of Cyrus the Great in OCR's GCSE Persian Empire period study, covering the conquest of Media, the defeat of Croesus of Lydia and the capture of Babylon, the policy of conciliation advertised by the Cyrus Cylinder, and how to read Herodotus as the main source for the founding of the empire.
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What this dot point is asking
The Persian Empire period study opens with the rise of Cyrus the Great and the foundation of the empire. You need to know how a minor kingdom in the Iranian highlands became, within a single generation, the largest empire the world had yet seen, and you must be able to explain why Cyrus succeeded. Because this is an ancient-history course, you also have to handle the prescribed sources: Herodotus Book 1 as the main narrative, and the Cyrus Cylinder as a piece of royal Persian evidence.
The answer
Cyrus and the conquest of an empire
By 539 BC Cyrus ruled from the borders of India to the Aegean coast. The speed of this expansion is one of the things the period study asks you to explain, not just describe.
Why Cyrus succeeded
The strongest answers argue that military strength delivered the initial conquests, while conciliation made the empire durable, so the two together explain both speed and stability.
The Cyrus Cylinder and the policy of conciliation
The Cylinder is the model example of why this course is about using sources critically: it tells you about Persian royal ideology precisely because it is one-sided.
Herodotus as the main narrative
Examples in context
A model answer never simply retells Herodotus's stories: it uses the conquests as evidence for ranked causes and signals where a source such as the Cylinder is shaping the picture.
Try this
Q1. Name the three kingdoms Cyrus the Great conquered, and give an approximate date for each. [Knowledge recall]
- Cue. Media (about 550 BC), Lydia under Croesus (about 546 BC), Babylon (539 BC).
Q2. Explain why the Cyrus Cylinder is useful to a historian despite being propaganda. [Short source evaluation]
- Cue. Because it shows how Cyrus wished to present himself (a liberator restoring religion under Marduk's favour), which is exactly what a study of Persian royal ideology needs, even though it is not a neutral account of what happened.
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 J198/01 20195 marksStudy the Cyrus Cylinder. What can we learn from this source about how Cyrus wished to be seen as a ruler? [5-mark source-inference question]Show worked answer →
A Section A source question (AO3), testing supported inference from a prescribed source.
Make inferences. The Cylinder presents Cyrus as a liberator chosen by the Babylonian god Marduk, who restored temples, returned displaced peoples and ended the misrule of the previous king Nabonidus.
Support each point. Quote or paraphrase the detail that justifies the inference, for example the claim to have entered Babylon peacefully and restored its cults.
Top marks. Two or three developed inferences, each tied to detail in the source, rather than simply describing what the Cylinder says.
OCR J198/01 202110 marksExplain why Cyrus the Great was able to conquer so much territory so quickly. [10-mark explanation question]Show worked answer →
A Section A explanation question (AO1 and AO2) on causation.
Knowledge. Cyrus conquered Media (about 550 BC), defeated Croesus of Lydia (about 546 BC) and captured Babylon (539 BC) within little more than a decade.
Explanation. Reward developed reasons: Persian military strength and Cyrus's generalship, his reputation for clemency, his policy of conciliating the conquered (restoring local cults, as the Cyrus Cylinder advertises), and the weakness or division of his enemies.
Top band. Explain why these factors combined to make conquest both rapid and durable, and reach a judgement on which mattered most, rather than narrating victories.
Related dot points
- Cambyses and the conquest of Egypt, the succession crisis after his death, and the accession of Darius I, studied through Herodotus Book 3 and the Behistun inscription, with the contradiction between the two accounts of how Darius took power.
An OCR GCSE Ancient History answer on Cambyses and the accession of Darius I, covering the conquest of Egypt in 525 BC, Herodotus's hostile portrait of the mad king, the succession crisis after Cambyses's death, and how Herodotus and the Behistun inscription give contradicting accounts of how Darius came to the throne.
- The reign of Darius I and the administration of the empire: the satrapy system, tribute and taxation, the Royal Road and communications, the king's ideology and the building programme at Persepolis and Susa as expressions of royal power.
An OCR GCSE Ancient History answer on the administration of the Persian empire under Darius I, covering the satrapy system, tribute and taxation, the Royal Road and the king's messengers, royal ideology and the building programmes at Persepolis and Susa, and how the Persepolis reliefs present subject peoples and royal power.
- The accession of Xerxes and his great invasion of Greece in 480 BC: the bridging of the Hellespont and the canal at Athos, the battles of Thermopylae and Artemisium, Salamis and Plataea, and the reasons for the Persian failure, studied through Herodotus Book 7.
An OCR GCSE Ancient History answer on the invasion of Greece by Xerxes in 480 BC, covering his preparations and the bridging of the Hellespont, Thermopylae and Artemisium, the decisive sea battle of Salamis and the land battle of Plataea, and why the great Persian invasion failed, studied through Herodotus Book 7.
- The prescribed sources for the Persian Empire period study: Herodotus as the main Greek literary narrative (and its problems), and the Persian material evidence (the Cyrus Cylinder, the Behistun inscription and the Persepolis reliefs), and how to weigh one kind against the other.
An OCR GCSE Ancient History guide to the prescribed sources for the Persian Empire period study, explaining how to use Herodotus as the main Greek literary narrative (and the problems of a later, pro-Greek, moralising author) alongside the Persian material evidence (the Cyrus Cylinder, the Behistun inscription and the Persepolis reliefs), and how to weigh Greek against Persian sources.
- The AO3 source skills: making supported inferences from a source, comparing two sources, and judging how useful a source is for a stated enquiry using content, provenance (nature, origin and purpose) and contextual knowledge, rather than labelling a source reliable or biased.
An OCR GCSE Ancient History skills guide to the AO3 source questions, explaining how to make supported inferences, compare two sources, and judge how useful a source is for a stated enquiry using content, provenance and contextual knowledge, with a method that transfers across the Greek and Roman options.
Sources & how we know this
- OCR GCSE (9-1) Ancient History J198 specification — OCR (2017)
- Herodotus, Histories, Book 1 — Perseus Digital Library