Cisalpine Gaul

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Cisalpine Gaul was the part of northern Italy where Gauls (Celts) lived. Its Latin name was Gallia Cisalpina, and it was sometimes called Gallia Togata or Gallia Citerior. The name means “this side of the Alps” (as opposed to Transalpine Gaul on the far side of the Alps).

In the 4th and 3rd centuries BC it was a distinct region, geographically part of Italia but governed separately from the rest of Italy. It became a Roman province around 81 BC and stayed that way until 42 BC, when Julius Caesar’s plans merged it into Roman Italy.

The land was divided by the Po River into two main parts: Gallia Cispadana (south of the Po) and Gallia Transpadana (north of the Po). Its northern and western border reached the Alps, the southern edge ran to the Po and the Apennines, the Rubicon marked the eastern boundary with the Adriatic coast.

In 49 BC, Caesar granted Roman citizenship to all inhabitants. Later the region was divided among four parts of Italy: Regio VIII Gallia Cispadana, Regio IX Liguria, Regio X Venetia et Histria, and Regio XI Gallia Transpadana. Mutina (modern Modena) was a key administrative center.

Long before Romans ruled the area, several cultures lived there. The Canegrate culture (13th century BC) brought cremation to the Po valley and later merged with Ligurian groups to form the Golasecca culture, linked to the Lepontii. The Ligurians lived along the northern coast and spoke a language with Celtic influences; some scholars group them as Celto-Ligurians. The Veneti occupied the northeast and by the 4th century BC were largely Celticized.

The Celts from Gaul moved into northern Italy, founding cities such as Mediolanum (Milan). Rome fought them for generations, with notable events including the sack of Rome in 390 BC after defeats beyond the Alps, the Battle of Telamon in 225 BC, and later Rome’s campaigns against Hannibal in the 2nd century BC. Rome gradually defeated the northern peoples and extended its control.

Caesar’s famous crossing of the Rubicon in 49 BC came from Gallia Cisalpina and marked a turning point in Roman history. The province was officially merged into Italia in 42 BC during the Second Triumvirate. Notable Romans born there include Virgil, Catullus, and Livy.