The transformation of the Delian League into the Athenian Empire, the suppression of revolts (Naxos, Thasos, Samos), the Egyptian disaster, the transfer of the treasury to Athens (454 BC), Athenian imperialism, and the methods of control over the allies

What this dot point is asking

NESA expects you to describe the transformation of the Delian League into the Athenian Empire (arche) between 478 and 440 BC, the suppression of allied revolts (Naxos, Thasos, Samos), the Egyptian expedition, the transfer of the treasury to Athens in 454 BC, the instruments of Athenian control (tribute, garrisons, cleruchies, magistrates, coinage), and the historiographical debate over Athenian imperialism.

The answer

The early transformation: Naxos and Thasos

Naxos (around 470 BC). The first revolt of an ally. Naxos attempted to secede from the League. Cimon led the fleet that reduced Naxos by siege. The city was forced to remain; it lost its fleet, walls, and autonomy, and was reduced to tribute-payer status. Thucydides (1.98) calls this "the first instance of a Greek city being enslaved contrary to the established custom."

Thasos (465 to 463 BC). Thasos revolted over Athenian seizure of its mainland mining and trading interests at Eion. The siege lasted three years. Cimon reduced the city; the walls were torn down, the fleet handed over, the mining revenues forfeited, and an annual tribute imposed. The Spartans secretly promised invasion of Attica; the Spartan earthquake and helot revolt of 464 BC prevented action. The Athenians attempted to settle 10,000 colonists at Ennea Hodoi (Nine Ways, later Amphipolis) on the Strymon; the colonists were destroyed by the Thracians at Drabescus in 465 BC.

The Egyptian expedition (460 to 454 BC)

A Delian League fleet of 200 triremes was diverted to Egypt to support the revolt of Inaros of Libya against the Persian king Artaxerxes I. Initial successes captured Memphis. In 454 BC a Persian counter-attack under Megabyzus trapped the Greek fleet in the Nile delta; the Athenians lost around 250 ships and 8,000 men (Thucydides 1.104, 1.109 to 110). The disaster was the largest Athenian defeat of the period.

The strategic shock affected the League. Persian power threatened the Aegean again. Allied confidence in Athens was shaken.

The transfer of the treasury to Athens (454 BC)

In 454 BC the Athenians moved the treasury of the Delian League from Delos to the Opisthodomos of the temple of Athena on the Acropolis. The official reason was the Persian threat to Delos after the Egyptian disaster. The practical effect was that:

Athens controlled the funds. Allied tribute (phoros) was paid into the Athenian treasury.

The aparche. One sixtieth of the tribute was reserved for Athena and recorded annually in the Athenian Tribute Lists. The lists are the documentary foundation of the empire from 454 BC.

The Athenian Tribute Lists. Inscribed on a great marble stele (the first stele covered 454 to 440 BC; later stelae continued). The lists name each tributary city and the aparche it paid each year. From the lists modern historians reconstruct around 200 to 400 members and around 400 to 600 talents of annual tribute.

The Periclean building program. Surplus tribute funded the Parthenon (447 to 432 BC), the Propylaea, the Erechtheion, and other Athenian projects. Plutarch (Pericles 12) records the conservative protest led by Thucydides son of Melesias that Athens was "decking herself out like a vain woman with our allies' money."

The Peace of Callias (around 449 BC)

A negotiated peace, brokered by the Athenian Callias son of Hipponicus, ended formal hostilities between Athens and Persia. The terms (as reconstructed):

• Persian fleets would not enter the Aegean
• Persian armies would not approach within a day's ride of the Asia Minor coast
• The Ionian Greek cities were autonomous

The historicity of the peace is debated (Thucydides does not mention it; Plutarch, Diodorus, and the orators do). If genuine, it removed the original anti-Persian purpose of the League, leaving its continuation as Athenian imperial choice.

The Coinage Decree

The Athenian Coinage Decree (the precise date is contested, ranging from 449 to 414 BC, with the 420s BC most likely on Lewis's epigraphic evidence) ordered the allied cities to use Athenian coinage, weights, and measures. Allied silver coinage was banned; cities had to bring their silver to the Athenian mint. The decree imposed Athenian commercial standards across the empire.

The cleruchies

Cleruchies were settlements of Athenian citizens on land confiscated from allied or hostile states. The cleruchs retained Athenian citizenship and the land allotment was a form of paid garrison.

Major cleruchies (mid fifth century BC). Lemnos and Imbros (early), Naxos (after the revolt), Andros, Eretria, Chalcis (after the Euboean revolt of 446 BC), Hestiaia (replacing the population of Hestiaea after the same revolt), Brea in Thrace (around 446 BC).

Cleruchies were resented for displacing local landowners. They also tied Athenian citizens economically to the empire.

Athenian magistrates and judicial control

Episkopoi. Athenian "inspectors" sent out to allied cities to supervise loyalty and finance.

Archontes. Athenian governors installed in some cities (especially after revolts).

Garrisons. Athenian soldiers in key cities.

Judicial supervision. Capital cases involving Athenians, and many other cases between Athenians and allies, were transferred to Athenian courts. The Coinage Decree and the Chalcis Decree (446 BC) required citizens of subject states to swear loyalty oaths.

The Chalcis Decree (446 BC). Inscribed text survives. After the Euboean revolt of 446 BC, the Chalcidians swore: "I will not revolt from the people of Athens by any means, by deed or word, nor will I obey any one revolting." Resident Athenians acted as judges.

The Samian revolt (440 to 439 BC)

The major revolt of the late 440s BC. Samos was one of the few remaining ship-providing allies (rather than tribute payer). It revolted in 440 BC, partly over a dispute with Miletus and partly over Athenian intervention to install a democracy. Pericles personally commanded the siege.

The siege (440 to 439 BC). Eight months. The Samian fleet was defeated; the city was reduced. Athenian terms: fortifications razed, fleet handed over, hostages taken, war indemnity of 1,300 talents to be paid by instalments.

Significance. Samos was the last major naval ally to be reduced. After 439 BC the empire was a tribute-paying state with only Lesbos and Chios still providing ships. Thucydides (1.115 to 117) treats Samos as a near-Peloponnesian War: Sparta considered intervention.

Methods of control: a summary

Fiscal. Tribute (phoros) assessed every four years (the Panathenaic year). Around 460 talents in 478 BC; around 600 by the 440s; over 1,000 in the war years after 425 BC.

Naval. Athens built and crewed the fleet. Allied naval contingents (Lesbos, Chios) were rare exceptions.

Settlement. Cleruchies displaced allied landowners with Athenian citizens.

Magistracies. Episkopoi, archontes, garrisons.

Judicial. Capital cases and many civil cases brought to Athens.

Commercial. Athenian coinage, weights, and measures.

Religious. Allies sent offerings to the Panathenaia; the parthenos statue and Parthenon symbolised imperial Athens.

Historiography: arche or hegemonia?

Thucydides (writing around 400 BC) calls the empire arche (rule) by the time of 432 BC. His Athenian envoys at the Spartan congress (1.75 to 78) admit it: "fear, honour, and interest" forced Athens to keep the empire. The Mytilenean speech at Sparta (3.10 to 11) presents the allied case: a free alliance had become tyranny.

Russell Meiggs (The Athenian Empire, 1972) is the standard modern reconstruction. The transformation is real and complete by the 440s BC.

G. E. M. de Ste. Croix (Origins of the Peloponnesian War, 1972) defends the empire as more popular with the democratic factions in allied cities than Thucydides allows. The demos benefited from peace, protection, and trade; the oligarchic factions resented Athenian intervention.

Polly Low (Interstate Relations in Classical Greece, 2007) treats the empire as a constructed normative order, not a simple fact.

The sources

Thucydides, Pentecontaetia (1.89 to 117) and the Mytilenean Debate (3.36 to 49). The major literary sources.

The Athenian Tribute Lists (epigraphic from 454 BC). The documentary foundation.

The Chalcis Decree (446 BC), the Erythrae Decree (mid fifth century BC), the Coinage Decree (probably 420s BC). Inscribed Athenian decrees on imperial administration.

Plutarch, Pericles and Cimon. Later lives.

Aristophanes. Comic references to tribute, allies, and empire in the Acharnians and the Wasps.

How to read a source on this topic

Section IV sources on the transformation typically include extracts from Thucydides 1, the Athenian Tribute Lists, or the Chalcis Decree. Three reading habits.

First, watch the chronology. The transformation is gradual. Naxos (470s BC), Thasos (460s BC), the transfer of the treasury (454 BC), the Coinage Decree (probably 420s BC), Samos (440 BC) are stages, not a single moment.

Second, distinguish allied perspectives. The democratic factions in allied cities often welcomed Athenian intervention; the oligarchic factions resented it. There is no single "allied" view.

Third, integrate the inscriptions. Decrees and tribute lists are first-order evidence; literary sources frame them.

Common exam traps

Treating "Delian League" and "Athenian Empire" as separate things. Same institution at different stages.

Dating the empire from 454 BC alone. The transformation began with Naxos (around 470 BC) and was complete by Samos (440 BC).

Forgetting the Peace of Callias. Around 449 BC, removed the original purpose.

Ignoring the allied perspective. Thucydides, on Athenian sources, presents the empire as tyrannical. The cities' own perspectives must be reconstructed from inscriptions and indirect testimony.

In one sentence

Between 478 and 440 BC the Delian League was transformed into the Athenian Empire (arche) through the suppression of revolts (Naxos around 470 BC, Thasos 465 to 463 BC, Euboea 446 BC, Samos 440 to 439 BC), the transfer of the treasury to Athens in 454 BC after the Egyptian disaster, the assertion of Athenian coinage and weights, the planting of cleruchies, the imposition of Athenian magistrates and courts, and the conclusion of the Peace of Callias (around 449 BC) that ended the original anti-Persian purpose, producing by 440 BC an empire of around 200 to 400 tribute-paying cities funding the Periclean building program on the Athenian Acropolis.