Editing 420 BC

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{{Year nav|-420}}
{{BC year in topic|420}}
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Year '''420 BC''' was a year of the [[Roman calendar|pre-Julian Roman calendar]]. The denomination 420 BC for this year has been used since the early medieval period, when the [[Anno Domini]] [[calendar era]] became the prevalent method in Europe for naming years.

== Events ==
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=== By place ===
==== Greece ====
* The young and popular [[Alcibiades]] is elected "[[Strategos]]" (one of a board of ten generals) and begins to dominate [[Athens|Athenian]] life and politics. A Quadruple Alliance of [[Athens]], [[Argos, Peloponnese|Argos]], [[Mantineia]] and [[Ancient Elis|Elis]], which has been organised by Alcibiades (in opposition to [[Nicias]]) confronts a [[Sparta]]n-[[Boeotia]]n alliance.
* Around 420 BC, Spartans were excluded from participating in the Olympic Games due to their ongoing conflicts with other Greek city-states, violating a peace treaty. This exclusion was part of a broader effort to maintain the peaceful atmosphere of the games.<ref>{{Cite web |last=Magazine |first=Smithsonian |last2=Shavin |first2=Naomi |title=The Ancient History of Cheating in the Olympics |url=https://www.smithsonianmag.com/history/ancient-history-cheating-olympics-180960003/ |access-date=2023-08-20 |website=Smithsonian Magazine |language=en}}</ref>

=== By topic ===
==== Drama ====
* [[Euripides]]' play ''[[The Suppliants (Euripides)|The Suppliant Women]]'' is performed.
* Euripides' play ''[[Phaethon (play)|Phaethon]]'' is performed.
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== Births ==

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== Deaths ==
* [[Protagoras]], [[Ancient Greece|Greek]] [[Pre-Socratic philosophy|presocratic]] [[Philosophy|philosopher]] (b. c. [[490 BC]])

== References ==
{{Reflist}}

{{DEFAULTSORT:420 Bc}}
[[Category:420s BC]]
[[Category:Years of the 5th century BC]]