40s BC

WORLD HISTORY · 500–1 BC 日本語

Events of the 40s BC49–40 BC

21Events
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What happened in the 40s BC?

In the 40s BC (49–40 BC), Caesar crossed the Rubicon, starting a Roman civil war; he defeated Pompey at Pharsalus and created the Julian calendar, but was assassinated. Octavian and others then formed the Second Triumvirate, and in Western Han Emperor Yuan took the throne.

  1. Caesar crosses the RubiconEurope
  2. Emperor Yuan becomes Han emperorAsia
  3. Caesar wins the Battle of PharsalusEurope
  4. Caesar defeats Pontus at the Battle of ZelaMiddle East
  5. Caesar creates the Julian calendarEurope
  6. Caesar is assassinatedEurope
  7. Second Triumvirate beginsEurope
  8. Battle of Philippi in Roman civil warEurope

Summaries are written by the site editors.

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Events of the 40s BC (timeline · 21)

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40s BC

The Senate of Rome says that Caesar will be declared a public enemy unless he disbands his army, prompting the tribunes who support him to flee to where Caesar is waiting in Ravenna.

Europe

Julius Caesar crosses the Rubicon, signalling the start of civil war.

Europe

Caesar, who marched to Spain earlier in the year, leaving Marcus Antonius in charge of Italy, defeats Pompey's general Afranius and Petreius in Ilerda (Lerida) north of the Ebro river.

Europe

Caesar's Civil War: Battle of Pharsalus: Julius Caesar decisively defeats Pompey at Pharsalus and Pompey flees to Egypt.

Middle East

Pompey disembarks at Pelusium upon arriving in Egypt, whereupon he is assassinated by order of King Ptolemy XIII.

Middle East

Julius Caesar defeats Pharnaces II of Pontus in the battle of Zela.

Middle EastEurope

Julius Caesar fights Titus Labienus in the Battle of Ruspina.

EuropeAfrica

Julius Caesar defeats Caecilius Metellus Scipio and Marcus Porcius Cato (Cato the Younger) at the Battle of Thapsus.

Africa

Julius Caesar dedicates a temple to Venus Genetrix, fulfilling a vow he made at the Battle of Pharsalus.

Europe

The Julian calendar takes effect as the civil calendar of the Roman Republic, establishing January 1 as the new date of the new year.

Europe

In his last victory, Julius Caesar defeats the Pompeian forces of Titus Labienus and Pompey the Younger in the Battle of Munda.

Europe

The assassination of Julius Caesar, the dictator of the Roman Republic, by a group of senators takes place on the Ides of March.

Europe

Pharaoh Cleopatra VII of Egypt declares her son co-ruler as Ptolemy XV Caesarion.

Middle East

Cicero launches the first of his Philippicae (oratorical attacks) on Mark Antony. He will make 14 of them over the following months.

Europe

Legions loyal to the Roman Senate, commanded by Gaius Pansa, defeat the forces of Mark Antony in the Battle of Forum Gallorum.

Europe

Battle of Mutina: Mark Antony is again defeated in battle by Aulus Hirtius, who is killed. Antony fails to capture Mutina and Decimus Brutus is murdered shortly after.

Europe

In the wake of the murder of Julius Caesar, his nephew and heir, Octavian, uses the threat of military force to compel the Roman Senate to elect him Consul.

Europe

Marcus Tullius Cicero is assassinated in Formia on orders of Marcus Antonius.

Europe

The Roman Senate posthumously deifies Julius Caesar.

Europe

Liberators' civil war: Triumvirs Mark Antony and Octavian fight to a draw Caesar's assassins Brutus and Cassius in the first part of the Battle of Philippi, where Cassius commits suicide believing the battle is lost.

Europe

Liberators' civil war: Mark Antony and Octavian decisively defeat an army under Brutus in the second part of the Battle of Philippi, with Brutus committing suicide and ending the civil war.

Europe

EventNameFamous birthEvent in more than one region

Source: Wikipedia date pages ("January 1" … "December 31") / CC BY-SA 4.0. Regions are assigned by the site editors.

Dates and events are based on Wikipedia and other references. Summaries and regions are written by the site editors.

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執筆者: 瀬尾

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