430s BC

== 439 BC==

Greece As a result of Persian assistance to Samos, it takes the Athenian army nine months to successfully complete its siege of Samos and force the Samians to surrender. Samos becomes a tributary of Athens. Roman Republic Spurius Maelius, a wealthy Roman plebeian, tries to buy popular support with the aim of making himself king. During the severe famine affecting Rome, he buys up a large store of grain and sells it at a low price to the people of Rome – the first time this had been done in Rome. This leads Lucius Minucius, the patrician praefectus annonae ("president of the market"), to accuse Maelius of seeking to take over the government. Maelius is summoned before Cincinnatus (who has again become dictator of the Roman Republic, to put down a revolt by the plebeians), but refuses to appear. Shortly thereafter, Maelius is killed by Gaius Servilius Ahala and his house is burnt to the ground.

438 BC
Greece The Parthenon on the Acropolis at Athens is completed by Ictinus and Callicrates and is consecrated after 9 years of construction. It is dedicated at the Panathenaea (a festival held in honor of Athena every four years on the Acropolis). The colossal statue of the Athena Parthenos, which Phidias has made for the Parthenon, is completed and dedicated. It is made of gold and ivory and stands some 12 meters high. Telephus, a play by the renowned playwright Euripides, is produced in Athens. This tragedy did not survive to modern times. Italy The city of Capua falls to the Samnites.

Literature The Greek playwright Euripides ' play Alcestis is performed in the Dionysia, an Athenian dramatic festival. Art Three seated Goddesses (possibly Hestia, Dione and Aphrodite ), from the east pediment of the Parthenon , are made (finished in 432 BC). They are now kept at The British Museum in London. The Ionic frieze on the north side of the Parthenon, is created (finished in 432 BC). Parts of this frieze are now preserved in museums in Europe, including the Horsemen (at the British Museum, London), and the Marshals and Young Women (now at Musée du Louvre, Paris), which once formed part of the Procession on the frieze.

437 BC
Greece Pericles, concerned for Athenian trade with Greek settlements to the East, and in order to counteract a new and possibly threatening Thracian–Scythian alliance, leads Athens' fleet to Pontus on the Black Sea and establishes friendly relations with the Greek cities of the region.

Architecture Mnesikles starts to build Propylaia, Acropolis, Athens. The work is canceled in 432 BC, due to the Peloponnesian war, and thus is never finished.

436 BC
Greece Following Pericles' visit to the Black Sea, a large Athenian colony is founded at Amphipolis. This is disconcertingly close to an outpost of Corinthian influence at Potidaea in the Chalcidice. Corinth feels it is being indirectly pressured by Athens.

== 435 BC==

Greece A dispute arises between Epidamnus' oligarchs and democratic forces in the Greek colony. Most of the colony's inhabitants originate from Corinth or Corcyra (Corfu). Epidamnus' oligarchs are exiled and then appeal to Corcyra for help, while the democrats enlist the support of Corinth. Corcyra is then attacked by Corinth as the dispute heats up.

Art A gold and ivory statue of Zeus, king of the gods, is completed at Elis by the Athenian sculptor Phidias for the Temple of Zeus at Olympia. The statue becomes one of the Seven Wonders of the World. The Olympian Zeus is about seven times life-size (or 13 meters) and occupies the full height of the temple.

434 BC
Greece Under the leadership of Pericles, Athens introduces a series of measures (the "Megarian decree") imposing an economic embargo on Megara for violations of land sacred to Demeter. According to the provisions of the decree, Megarian merchants are to be excluded from the market of Athens and the ports in its empire. This ban strangles the Megarian economy and strains the fragile peace between Athens and Sparta, which is allied with Megara. Philip, brother of Perdiccas II of Macedon challenges Perdiccas for the throne and enlists the support of Athens and King Derdas of Elimea. Perdiccas responds by stirring up rebellion in a number of Athenian tribute cities, including Potidaea. Anaxagoras is arrested by Pericles' political opponents on a charge of contravening the established dogmas of Athenian religion. It needs Pericles' power of oratory and persuasion to secure his release. Even so he is fined and forced to retire from Athens to Lampsacus in Ionia.

Secret Societies In Oxford's Hood & Bell Society the numbers "434" are said to bear significance.

Mathematics While in prison, Anaxagoras tries to square the circle with straightedge and compasses.

433 BC
Greece Pericles concludes a defensive alliance with Corcyra (Corfu), the strong naval power in the Ionian Sea, which is the bitter enemy of Corinth. As a result, Athens intervenes in the dispute between Corinth and Corcyra, and, at the Battle of Sybota, a small contingent of Athenian ships play a critical role in preventing a Corinthian fleet from capturing Corcyra. Following this, Athens places Potidaea, a tributary ally of Athens but a colony of Corinth, under siege. The Corinthians, upset by Athens' actions, lobby Sparta to take action against Athens. This appeal is backed by Megara (which is being severely affected by Pericles' economic sanctions) and by Aegina (which is being heavily taxed by Pericles and which has been refused home rule). Pericles renews alliances with the Rhegium on the south west corner of Italy and Leontini in south-east Sicily, threatening Sparta's food supply route from Sicily.

Art A set of sixty-five bells, from the Tomb of Marquis Yi of Zeng (Zhou dynasty) in Suixian, Hubei, is made. It is now preserved at the Hubei Provincial Museum in Wuhan.

432 BC
Greece Sparta calls and hosts a conference of the Peloponnesian League. The conference is attended by Athenian representatives as well as members of the League. Following arguments by Corinth against Athens, a majority of the League members vote to declare that the Athenians had broken the peace. The Athenian admiral, Phormio, continues the siege of Potidaea by blocking the entrance to the Gulf of Corinth. Meanwhile an Athenian fleet, led by Archestratus, sails for Potidaea. However, instead of attacking Potidaea, they attack the Macedonians under Perdiccas II, who have allied with the Potidaeans. The Athenians capture Therma (modern Thessalonica) and then go on to besiege Pydna. However, as the Athenians are besieging Pydna, they receive news that Corinth has sent a force under the command of Aristeus to support Potidaea. In response, Athens sends more troops and ships under the command of Hipponicus. The combined Athenian force sails to Potidaea and lands there. In the ensuing Battle of Potidaea, the Athenians are victorious against Corinth and its allies.

Italy The Greek colony of Heraclea in Southern Italy is founded by colonists from Tarentum and Thurii. China The Chinese Marquis Yi of Zeng is buried (approximate date) with lavish tomb items including a 65 set of bronze bells (bianzhong) with five-octave musical scale and two musical tones that can be produced by each bell. Marquis Yi was from the State of Chu during the Warring States phase of the Zhou Dynasty.

Astronomy Meton of Athens, a Greek mathematician and astronomer, calculates accurately the comparative chronology of the solar and lunar cycles. As a result, he introduces the 19-year Metonic cycle into the Athenian calendar as a method of calculating dates. Working with Euctemon, he observes the summer solstice on 27 June.

Architecture Pheidias completes the sculptures that form the decoration of the Parthenon in Athens.

431 BC
Greece Athens enters into an alliance with King Sitalkes of Thrace, after Nymphodorus, an influential Athenian, marries Sitalkes' sister. Nymphodorus then negotiates an agreement between Athens and Macedon's King Perdiccas II, through which Perdiccas regains Therma. As a result, Athens withdraws its support for Perdiccas' brother, Philip, and the Thracians promise to assist Perdiccas in capturing him. In return, Perdiccas marches on the Chalcidians, the people he has originally persuaded to revolt. A Theban raid on Plataea, the only pro-Athenian city in Boeotia, is a failure and the Plataeans take 180 prisoners and put them to death. Athens supports Plataea while Sparta aligns itself with Thebes. Sparta enlists the help of the Greek cities in Italy and Sicily. Both Sparta and Athens appeal to Persia, but without result. The Spartans, led by King Archidamus II, invade Attica effectively starting the Second Peloponnesian War between the Athenian Empire and the Peloponnesian League. The Spartans lay waste to the countryside around Athens. Athenian leader, Pericles, does not seriously oppose them, rather withdrawing the rural population of the country districts within Athens' city walls. Instead, he pursues active naval warfare and reduces any danger from the island of Aegina by replacing its native population with Athenians. Roman Republic The Romans defeat the Aequi and the Volsci at the battle on the Mount Algidus.

Anatomy The Greek philosopher Empedocles distinguishes the four elements - earth, fire, water, and air - that he claims all substances are made of. He explains the development of the universe by the forces of attraction and repulsion known as Love and Strife.

Literature Euripides' play Medea wins third prize at the Dionysia, the famous Athenian dramatic festival.

430 BC
Greece The army of Sparta loots Attica for a second time, but Pericles is not daunted and refuses to revise his initial strategy. Unwilling to engage the Spartan army in battle, he again leads a naval expedition to plunder the coasts of the Peloponnesus, this time taking 100 Athenian ships with him. Potidaea finally capitulates to the siege by Athenian forces in the winter. An outbreak of a plague hits Athens and the disease ravages the densely packed city (modern DNA analyses of material from ancient cemeteries suggest the mortal disease may have been typhus). The plague wipes out over 30,000 citizens, sailors and soldiers as well as Pericles' two sons. Roughly one quarter of the Athenian population dies. The fear of plague is so widespread that the Spartan invasion of Attica is abandoned, their troops being unwilling to risk contact with the diseased enemy. Pericles becomes ill from the plague but he recovers, temporarily. He is deposed from his position as General (or Strategos), but is later reappointed.

Art Polyclitus completes one of his greatest statues, the Diadumenos (Diadem-bearer).

Births
Isocrates, Athenian orator (d. 338 BC) Artaxerxes II, king of Persia (approximate date) (d. 358 BC) 435 BC

Philoxenus of Cythera, Greek dithyrambic poet (d. 380 BC) 432 BC

Dionysius, tyrant of Syracuse (d. 367 BC) (approximate birthdate) 431 BC

Xenophon, Athenian Greek mercenary and writer (d. c. 354 BC)

Deaths
Cincinnatus, Roman politician, consul and dictator (b. 519 BC) 436 BC

Zengcius, Chinese philosopher (b. 505 BC) 434 BC

Duke Jing of Jin 433 BC

Zeng Hou Yi, marquis of the state of Zeng, subordinate to Chu 431 BC

Phidias returns to Athens, where he is imprisoned (for having been portrayed on the shield of the statue of the goddess Athena) and dies before the trial.

430 BC

Empedocles, Greek philosopher (approximate date) (b. c. 490 BC) Phidias, Greek sculptor (approximate date) (b. c. 480 BC) Zeno of Elea, Greek philosopher (approximate date) (b. c. 490 BC)