54 BCE
Second of Caesar's Invasions of Britain: Julius Caesar receives nominal submission from the tribal chief Cassivellaunus and installs Mandubracius as a friendly king. Pompey builds the first permanent theatre in Rome. Crassus arrives in Syria as proconsul and invades the Parthian Empire, initiating the Roman–Persian Wars, which were to last nearly seven centuries.
Conflict & Security
- July – Second of Caesar's Invasions of Britain: Julius Caesar receives nominal submission from the tribal chief Cassivellaunus and installs Mandubracius as a friendly king.source
- Fifth year of Julius Caesar's Gallic Wars:source
- Winter – Ambiorix revolts in Gaul.source
- Crassus arrives in Syria as proconsul and invades the Parthian Empire, initiating the Roman–Persian Wars, which were to last nearly seven centuries.source
Exploration & Expansion
- Consuls: Appius Claudius Pulcher and Lucius Domitius Ahenobarbus.source
Culture & Society
Births
Deaths
- July 31 – Aurelia Cotta, mother of Julius Caesar (b. 120 BC)source
- Quintus Laberius Durus, Roman tribune of Julius Caesarsource
- Lucius Gellius Publicola, Roman politician (approximate date)source
- Quintus Titurius Sabinus, Roman legate of Julius Caesarsource
- Huo Chengjun, empress of the Han Dynastysource
- Lucius Aurunculeius Cotta, Roman legate of Julius Caesarsource
- Lucius Valerius Flaccus, Roman tribune and praetorsource
- Gaius Valerius Catullus, Roman poet and writer (b. 84 BC)source
- Julia, daughter of Julius Caesar (dies in childbirth)source
- Ariovistus, leader of the Suebi (approximated date)source
- Mithridates III, king of Parthia (executed by Orodes II)source