Cisalpine Gaul

Cisalpine Gaul was a Roman province located in Gaul.

History
At some point prior to 49 BC, Julius Caesar conquered the region of Gaul, which included Cisalpine Gaul.

In 49 BC, Caesar set up a camp in Cisalpine Gaul to prepare for his march on the Rubicon.

Behind the scenes

 * In the real world, Cisalpine Gaul was the part of Italy inhabited by Celts (Gauls) during the 4th and 3rd centuries BC. It was considered part of Gaul, precisely that part of Gaul on the "hither side of the Alps" (from the perspective of the Romans), as opposed to Transalpine Gaul ("on the far side of the Alps").