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The 300s BC

125 sourced entries across 10 years, inside the 4th century BC. Each year below opens its own page; the lines under it are that year’s highest-ranked entries.

309 BCE19 entries

  • The Samnites again rise against Rome. Lucius Papirius Cursor is appointed dictator for the second time and wins a great victory at Longula over the Samnites.
  • Areus I succeeds his grandfather Cleomenes II as king of Sparta.
  • Ptolemy I Soter personally commands a fleet that takes the coastal regions of Lycia and Caria from Antigonus I Monophthalmus, capturing the cities of Phaselis, Xanthos, Kaunos, Iasos and Myndus.

308 BCE20 entries

  • The Carthaginians send out an army to coerce the Zuphones, a Numidian tribe, back into their alliance with Carthage; they are successful in their endeavour.
  • The Second Samnite War escalates when the tribes of the central Apennines, the Umbrians, Picentes, and Marsians join the war against Rome. However, Rome is able to control the uprising.
  • After an arduous march from Cyrenaica to Carthaginian Libya Ophellas' forces link up with Agathocles' army.

307 BCE32 entries

  • Demetrius of Phalerum, who ruled Athens for 10 years with the support of Cassander, recognizes his position has become untenable. He opens up negotiations, and after several diplomatic exchanges involving Aristodemus of Miletus, Antigonus top diplomat, he is given safe conduct to Thebes. Eventually he settles in Alexandria
  • The Chinese King Wuling of Zhao reforms the military of the State of Zhao by putting more emphasis on cavalry over charioteers.
  • Epicureanism, a system of philosophy based upon the teachings of Epicurus, is founded (approximate date).

306 BCE10 entries

  • The Romans invade Iapygia and begin a siege of Silvium (garrisoned by the Samnites). Eventually, they take the city by storm, taking 5,000 prisoners. After the Siege of Silvium they invade Samnium itself, pillaging the countryside for five months.
  • A four-drachma coin, picturing Alexander the Great, is issued by Lysimachos from this time until 281 BC. At least one of them is now preserved at the British Museum in London.
  • The Samnites take Sora and Calatia, cities allied to the Romans, and enslave their inhabitants.

305 BCE7 entries

  • Seleucus, former officer of Alexander the Great, considers himself emperor of Persia. He attempts to recover lands taken by Chandragupta that had been a part of Alexander's Empire. Seleucus establishes Seleucia on the Tigris River as his capital.
  • The Roman consuls, Marcus Fulvius Curvus Paetinus and Lucius Postumius Megellus, decisively defeat the Samnites in the Battle of Bovianum to end the Second Samnite War.
  • Antigonus I Monophthalmus sends his son Demetrius to initiate the Siege of Rhodes, as the city has refused him armed support against Ptolemy.

304 BCE11 entries

  • The second Samnite war formally ends with a peace agreement in which the Samnites obtain peace on terms that are severe but not as crushing as those agreed by the Romans with the Etruscans four years earlier. Under the peace, Rome gains no territory, but the Samnites renounce their hegemony over Campania. Rome is also successful in ending the revolts amongst the tribes surrounding Roman territory.
  • Cassander invades Attica and besieges Athens. He captures the island of Salamis off the coast of Athens.
  • The Mauryan emperor Chandragupta defeats Seleucus I Nicator as he tries to invade India.

303 BCE6 entries

  • Demetrius Poliorcetes invades the Peloponnese and occupies Corinth, Sicyon, and Argos in the Peloponnese, and Achaea, Elis and almost all of Arcadia join his side.
  • Seleucus I Nicator expands his kingdom throughout Persia as far east as India, but his advance is eventually halted by Chandragupta Maurya, the founder of the Maurya dynasty of India. In a pact concluded by the two leaders, Seleucus agrees to territorial concessions in exchange for 500 war-trained elephants.
  • The citizens of Tarentum seek the help of the Spartan general, Cleonymus. He is able to pacify the Lucanians with the agreement of the Romans.

302 BCE9 entries

  • Antigonus' son Demetrius Poliorcetes attacks Cassander's forces in Thessaly. Cassander loses his possessions south of Thessaly to Demetrius. Antigonus and Demetrius crown their success by renewing the pan-Hellenic league. Ambassadors from all the Hellenic states (with the exception of Sparta, Messenia and Thessaly) meet at Corinth to elect Antigonus and Demetrius protectors of the new league.
  • Docimus, the regent of Phrygia, and Phoenix, the strategos of Lycia, desert Antigonus.
  • The Macedonian general, Philetaerus, moves his allegiance from Antigonus to Antigonus' rival, Lysimachus. In return, Lysimachus makes Philetaerus guardian of the fortress of Pergamum with its treasure of some 9,000 talents.

301 BCE5 entries

  • Antigonus' defeat and death secures Cassander's control of Macedonia. Through this victory, Lysimachus is able to add the greater part of Asia Minor to his European possessions while Seleucus now controls most of Syria. However, Demetrius is able to keep a foothold in Greece.
  • The southern part of Syria is occupied by Ptolemy.
  • In the Battle of Ipsus in Phrygia, the armies of Antigonus, the ruler of Syria, Asia Minor, Phoenicia and Judea, and his son Demetrius Poliorcetes are defeated by the forces of Lysimachus and Seleucus. Antigonus is killed in the battle.

300 BCE6 entries

  • In Pella, the capital of Macedonia, the artist Gnosis creates his Stag Hunt mosaic floor decoration.
  • Pilgrims travel to the healing temples of Asclepieion to be cured of their ills. After a ritual purification the followers bring offerings or sacrifices.
  • Pyrrhus, the King of Epirus, is taken as a hostage to Egypt after the Battle of Ipsus and makes a diplomatic marriage with the princess Antigone, daughter of Ptolemy and Berenice.