434 BC

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Millennium: 1st millennium BC
434 BC in various calendars
Gregorian calendar 434 BC
Ab urbe condita 320
Ancient Egypt era XXVII dynasty, 92
- Pharaoh Artaxerxes I of Persia, 32
Ancient Greek era 86th Olympiad, year 3
Assyrian calendar 4317
Balinese saka calendar N/A
Bengali calendar −1026
Berber calendar 517
Buddhist calendar 111
Burmese calendar −1071
Byzantine calendar 5075–5076
Chinese calendar 丙午(Fire Horse)
2263 or 2203
    — to —
丁未年 (Fire Goat)
2264 or 2204
Coptic calendar −717 – −716
Discordian calendar 733
Ethiopian calendar −441 – −440
Hebrew calendar 3327–3328
Hindu calendars
 - Vikram Samvat −377 – −376
 - Shaka Samvat N/A
 - Kali Yuga 2667–2668
Holocene calendar 9567
Iranian calendar 1055 BP – 1054 BP
Islamic calendar 1087 BH – 1086 BH
Javanese calendar N/A
Julian calendar N/A
Korean calendar 1900
Minguo calendar 2345 before ROC
Nanakshahi calendar −1901
Thai solar calendar 109–110
Tibetan calendar 阳火马年
(male Fire-Horse)
−307 or −688 or −1460
    — to —
(female Fire-Goat)
−306 or −687 or −1459

Year 434 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Second year of the Consulship of Iullus and Tricostus or the Year of the Consulship of Capitolinus and Praetextatus and the Year of the Tribunate of Cossus, Praetextatus and Capitolinus (or, less frequently, year 320 Ab urbe condita). The denomination 434 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.


By place[edit]


  • 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.

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