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321 BC

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Millennium: 1st millennium BC
Centuries: 5th century BC4th century BC3rd century BC
Decades: 350s BC  340s BC  330s BC  – 320s BC –  310s BC  300s BC  290s BC
Years: 324 BC 323 BC 322 BC321 BC320 BC 319 BC 318 BC
321 BC by topic
State leadersSovereign states
Birth and death categories
Establishments and disestablishments categories
321 BC in other calendars
Gregorian calendar 321 BC
Ab urbe condita 433
Armenian calendar N/A
Assyrian calendar 4430
Bahá'í calendar -2164–-2163
Bengali calendar -913
Berber calendar 630
English Regnal year N/A
Buddhist calendar 224
Burmese calendar -958
Byzantine calendar 5188–5189
Chinese calendar 己亥
— to —
Coptic calendar -604–-603
Ethiopian calendar -328–-327
Hebrew calendar 3440–3441
Hindu calendars
 - Vikram Samvat -264–-263
 - Shaka Samvat N/A
 - Kali Yuga 2781–2782
Holocene calendar 9680
Iranian calendar 942 BP – 941 BP
Islamic calendar 971 BH – 970 BH
Japanese calendar
Korean calendar 2013
Minguo calendar 2232 before ROC
Thai solar calendar 223

Year 321 BC was a year of the pre-Julian Roman calendar.


By place

Macedonian Empire

Roman Republic

  • Successes by Rome's armies force the Samnites to ask for peace. The terms are harsh so peace does not happen.
  • Two Roman consuls, Spurius Postumius Albinus and Titus Veturius Calvinus, leading a force into Samnium. They are trapped in a mountain pass known as the Caudine Forks. They make a five year treaty with the Samnites.