307 BC: Information from Answers.com

Millennium:	1st millennium BC
Centuries:	5th century BC – 4th century BC – 3rd century BC
Decades:	330s BC 320s BC 310s BC – 300s BC – 290s BC 280s BC 270s BC
Years:	310 BC 309 BC 308 BC – 307 BC – 306 BC 305 BC 304 BC

307 BC by topic
Politics
State leaders – Sovereign states
Birth and death categories
Births – Deaths
Establishments and disestablishments categories
Establishments – Disestablishments v • d • e

Events

Antigonus makes peace with Seleucus, who is left free to consolidate his kingdom.

Ptolemy founds the Museum and Library of Alexandria with the help of Demetrius Phalereus. Like Alexander the Great, Ptolemy has studied under Aristotle and staffs the museum with some 100 professors paid by the state.

The governor (despot) of Athens for 10 years and supporter of Cassander, Demetrius Phalereus, is obliged to flee from Athens on the approach of the Macedonian prince, Demetrius Poliorcetes. Demetrius Phalereus settles in Alexandria in Egypt.
Demetrius Poliorcetes re-establishes the old Athenian constitution. The grateful Athenians honour Antigonus and Demetrius as divine saviours (theoi soteres).
Upon becoming ruler of Epirus, Phyrrhus allies himself with his brother-in-law, Demetrius Poliorcetes, son of Antigonus.

The tyrant of Syracuse, Agathocles is forced to return to Syracuse to deal with growing unrest in his Sicilian dominions. Those of Agathocles' army that remain behind in Carthage are soon destroyed.
The Carthaginian general Hamilcar fails to take Syracuse and is captured and killed.
The city of Segesta in Sicily is destroyed by Agathocles.

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).

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