View source for 495 BC

=== Roman Republic ===
* A [[temple]] is built on the [[Circus Maximus]], between the Aventine and [[Palatine]] hills, in [[Rome]], in honour of the [[god]] [[Mercury (mythology)|Mercury]] and was dedicated on 15 May.<ref>[[Livy]], [[wikisource:From_the_Founding_of_the_City/Book_2#21|2.21]]</ref> 
* The number of [[Roman tribe]]s is increased to 21.
* Additional colonists were sent to the colony at [[Segni|Signia]].
* The [[Volsci]] [[Roman-Volscian wars#Volscian invasion in 495 BC|launch an invasion]] against Rome, but are defeated, and in retaliation Rome plunders [[Suessa Pometia]].<ref>[[Livy]], [[wikisource:From_the_Founding_of_the_City/Book_2#25|2.25]]</ref>
* Roman troops [[Roman-Sabine wars#The one-day war.2C 495 BC|defeat]] an invading force of [[Sabine]]s.
* Roman troops defeat an army of the [[Aurunci]] near the town of [[Ariccia|Aricia]].<ref>[[Livy]], [[wikisource:From_the_Founding_of_the_City/Book_2#26|2.26]]</ref>
* The beginning of discord between the plebs and patricians leading to the [[First secessio plebis in 494 BC|first secession of the plebs]].<ref>[[Livy]], [[wikisource:From_the_Founding_of_the_City/Book_2#23|2.23]]</ref>