Editing 303 BC

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{{BC year in topic|303}}
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Year '''303 BC''' was a year of the [[Roman calendar|pre-Julian Roman calendar]]. At the time, it was known as the '''Year of the Consulship of Lentulus and Aventinensis''' (or, less frequently, '''year 451 ''[[Ab urbe condita]]'''''). The denomination 303 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 ==
<onlyinclude>
=== By place ===
==== Seleucid Empire ====
* [[Seleucus I Nicator]] expands his kingdom throughout [[Persia]] as far east as [[India]], but his advance is eventually halted by [[Chandragupta Maurya]], the founder of the [[Maurya]] dynasty of India. In a pact concluded by the two leaders, Seleucus agrees to territorial concessions in exchange for [[war elephant|500 war-trained elephants]].<ref>{{cite book|first=Kaushik|last=Roy|title=Warfare in Pre-British India – 1500BCE to 1740CE|publisher=Routledge|location=Abingdon|year=2015|isbn=978-1-31758-692-0|page=48}}</ref>
* Seleucus refounds the town of Orrhoa in northern [[Mesopotamia]] as a military colony and mixes Greek settlers with its eastern population. He names [[Edessa, Mesopotamia|Edessa]] in memory of the ancient capital of [[Macedon]].{{cn|date=February 2024}}

==== Greece ====
* [[Cassander]] and [[Lysimachus]] persuade Seleucus and [[Ptolemy I Soter|Ptolemy]] to join them in trying to destroy [[Antigonus I Monophthalmus|Antigonus]].{{cn|date=February 2024}}
* [[Demetrius Poliorcetes]] invades the [[Peloponnese]] and occupies [[Corinth]], [[Sicyon]], and [[Argos, Peloponnese|Argos]] in the [[Peloponnese]], and [[Achaea]], [[Ancient Elis|Elis]] and almost all of [[Arcadia (ancient region)|Arcadia]] join his side.{{cn|date=February 2024}}

==== Italy ====
* The citizens of [[Taranto|Tarentum]] seek the help of the [[Sparta]]n general, [[Cleonymus of Sparta|Cleonymus]]. He is able to pacify the [[Lucanians]] with the agreement of the [[Roman Republic|Romans]].<ref>{{cite book|last=Siculus|first=Diodorus|title=Library|url=https://penelope.uchicago.edu/Thayer/E/Roman/Texts/Diodorus_Siculus/20E*.html#ref38|volume=XIX|chapter=104}}</ref>

== Births ==
* [[King Xiaowen of Qin|Xiaowen of Qin]], 34th [[Qin (state)#Rulers|Ruler of Qin]] (d. [[251 BC]])

== Deaths ==
{{Empty section|date=June 2021}}

== References ==
{{Reflist}}

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[[Category:303 BC| ]]