Augustus vs Philip I of France

Octavian, Mark Antony, and Marcus Aemilius Lepidus formed the Second Triumvirate, a legal commission to govern the Roman Republic. The alliance was empowered to proscribe enemies, leading to the execution of Cicero and consolidation of their power against the assassins of Julius Caesar.

Octavian's fleet, commanded by Marcus Agrippa, defeated the combined naval forces of Mark Antony and Cleopatra VII off the coast of Greece. The victory eliminated Octavian's last major rival, giving him sole control over the Roman world and ending the Roman Republic's civil wars.

Octavian formally returned power to the Roman Senate, which then granted him the titles Augustus and Princeps. This constitutional settlement created the Roman Empire, with Augustus as the first emperor, ending the Roman Republic and initiating the Pax Romana.

Augustus implemented a comprehensive tax reform, including a census of Roman citizens and property, direct taxation of provinces, and the creation of a professional tax collection service (publicani). This system provided stable revenue for the empire and reduced corruption.

Augustus established the Praetorian Guard as a permanent elite military unit tasked with protecting the emperor and his family. Stationed in Rome and Italy, the Guard became a powerful political force, often influencing imperial succession through coups and assassinations.

The Roman Senate commissioned the Ara Pacis Augustae (Altar of Augustan Peace) to commemorate Augustus's return from pacifying Gaul and Spain. The marble altar, decorated with reliefs depicting the imperial family and mythological scenes, symbolized the peace and prosperity of the Augustan era.

Philip I succeeded his father Henry I as King of the Franks. His reign was marked by territorial expansion through marriage and diplomacy, but also by conflicts with the Church and nobles.

Philip I acquired the Vexin region through marriage to Bertha of Holland. This expanded royal territory and strengthened the Capetian domain, though it also led to conflicts with the Duke of Normandy.

Philip I supported the rebellion of Robert Curthose against his father William the Conqueror. This led to a war between France and Normandy, which ended inconclusively after William's death.

Philip I was excommunicated by Pope Urban II for marrying Bertrade de Montfort while still married to his first wife, Bertha of Holland. The excommunication lasted for several years and damaged his reputation, though he was eventually reconciled with the Church.