100 BC

Year100 BCwas a year of thepre-Julian Roman calendar.At the time it was known as theYear of the Consulship of Marius and Flaccus(or, less frequently,year 654Ab urbe condita) and theFirst Year of Tianhan.The denomination 100 BC for this year has been used since the early medieval period, when theAnno Dominicalendar erabecame the prevalent method in Europe for naming years.

Millennium:	1st millenniumBC
Centuries:	2nd centuryBC 1st centuryBC 1st century
Decades:	120sBC 110sBC 100sBC 90sBC 80sBC
Years:	103BC 102BC 101BC 100BC 99BC 98BC 97BC

100 BC in variouscalendars

Gregorian calendar	100 BC C BC
Ab urbe condita	654
Ancient Egypt era	XXXIIIdynasty,224
- Pharaoh	Ptolemy X Alexander,8
Ancient Greek era	170thOlympiad(victor)¹
Assyrian calendar	4651
Balinese saka calendar	N/A
Bengali calendar	−692
Berber calendar	851
Buddhist calendar	445
Burmese calendar	−737
Byzantine calendar	5409–5410
Chinese calendar	Canh ThìnNăm (MetalDragon) 2598 or 2391 — to — Tân tị năm (MetalSnake) 2599 or 2392
Coptic calendar	−383 – −382
Discordian calendar	1067
Ethiopian calendar	−107 – −106
Hebrew calendar	3661–3662
Hindu calendars
-Vikram Samvat	−43 – −42
-Shaka Samvat	N/A
-Kali Yuga	3001–3002
Holocene calendar	9901
Iranian calendar	721 BP – 720 BP
Islamic calendar	743 BH – 742 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	2234
Minguo calendar	2011 beforeROC Dân trước 2011 năm
Nanakshahi calendar	−1567
Seleucid era	212/213AG
Thai solar calendar	443–444
Tibetan calendar	Dương kim long năm (male Iron-Dragon) 27 or −354 or −1126 — to — Âm kim xà năm (female Iron-Snake) 28 or −353 or −1125

Map of the world in 100 BC

Events

By place

Roman Republic

• Consuls:Lucius Valerius Flaccus,Gaius Marius(Marius's sixth consulship).
• Manius Aquilliuscelebrates anovationfor victories in theSecond Servile War.
• Lucius Appuleius Saturninus,atribune,passes a law toredistributeland tomilitary veterans.The law requires that all senators swear to abide by it.Quintus Caecilus Metellus Numidicusrefuses and is exiled. He goes toRhodesto study philosophy.
• Late summer–autumn: Saturninus stands for tribune again for the following year, and is elected. His associate, the praetorGaius Servilius Glaucia,attempts to stand for the consulship (illegally, as praetors cannot immediately become consul). A rival candidate,Gaius Memmius,is found murdered by agents of Saturninus and Glaucia, who are declared public enemies by theSenate.The Senate issues thesenatus consultum ultimum,and Marius, as consul, defeats his former ally in battle in theForum.Saturninus and his followers surrender on condition that their lives are spared, but they are stoned to death with roof tiles in theCuria Hostiliaby renegade senators.
• The building of the Sanctuary of Fortuna Primigenia,Palestrina,Italy,is begun. The model of it is now kept at theMuseo Archeologico Nazionale,Italy (approximate date).

Asia Minor

• Tigranes II of Armeniais placed on theArmenianthrone by theParthiansin exchange for the cession of "seventy valley" (approximate date).

Judea

• Thedeuterocanonical booksof1and2 Maccabeesare written.

India

• GandharaandPunjabare ruled by theIndo-GreekkingDemetrius III Aniketos.

China

• War of the Heavenly Horses:theHanexpedition underLi Guanglireturns victorious to China. He is followed by dynastic representatives sent by various Central Asian kings, so that they may pay tribute toEmperor Wu of Han.Emperor Wu keeps these representatives as hostages and sends soldiers to build pavilions and reclaim wasteland along the route to the west to provide food and shelter for Han envoys.
• Han-Xiongnu War:the Han general Zhao Ponu escapes Xiongnu custody and returns to China.

America

• Mural room in theMayapyramid atSan Bartolo,Guatemala,painted.

• Olmec III period ends in Southeastern Mexico.

Births

• Julius Caesar,Roman general and politician (d.44 BC)
• Titus Labienus,Caesar's chief lieutenant in the conquest ofGaul(d.45 BC)

Deaths

• Cornelia,mother ofTiberius Gracchus(b. c.190 BC)
• Gaius Memmius,Roman politician
• Gaius Servilius Glaucia,Roman politician
• Lucius Appuleius Saturninus,Roman politician
• Salvius Tryphon,Rebel slave
• Theodosius of Bithynia,Greek astronomer and mathematician (b. c.169 BC)