Editing 440 BC (section)

== Events ==
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=== By place ===
==== Greece ====
* [[Samos]], an autonomous member of the [[Delian League]] and one of [[Athens]]' principal allies with a substantial fleet of its own, quarrels with [[Miletus]]. Miletus, also a member of the Delian League, appeals to Athens for assistance. [[Pericles]] decides in favour of Miletus, so Samos revolts. Pericles then sails to Samos with a fleet to overthrow its [[Oligarchy|oligarchic]] government and install a democratic one. [[Sparta]] threatens to interfere. However, at a congress of the [[Peloponnesian League]], its members vote not to intervene on behalf of Samos against Athens.
The Histories by Herodotus was written that contain the knowledge of the Greco Persian wars.<ref>{{cite web | url=https://sourcebooks.fordham.edu/ancient/asbook07.asp#The%20Persian%20Wars | title=Internet History Sourcebooks Project: Ancient History }}</ref>

==== Roman Republic ====
* A [[famine]] strikes in [[Rome]].{{citation needed|date=October 2018}}

==== China ====
* [[Zhou Kao Wang]] becomes king of the [[Zhou dynasty]] of [[China]].

=== By topic ===
==== Physics ====
* [[Democritus]] proposes the existence of indivisible particles, which he calls [[atom]]s.

==== Art ====
* [[Polykleitos]] completes one of his greatest statues, the ''[[Doryphorus]]'' (''The Spear Bearer'') (approximate date).
* The stela, ''Demeter, Persephone and Triptolemos'', from [[Eleusis]], is made (approximate date). It is now kept at the [[National Archaeological Museum of Athens]].
* A temple for [[Poseidon]] is erected in [[Sounion]].
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