Gallic Empire

The Gallic Empire (407- CE), was an imperial, federational, and Christian, Gallic kingdom, located in Gaul and Northern Italy. It was founded by [...] after the collapse of the Arvernian Empire, caused by Germanic and Alan invasions, in 407 CE.

Early years
In 406, the Alans, Vandals, Suebi, and the Burgundians, crossed the Rhine and invaded Gaul, being forced to migrate west, because of Hunnic pressure in the east. The Vandals, Suebi and Alans sacked Gergovia in 407, killing the Arvernian king *Tenorix I, and his son *Caturix III. This marked the end of the Arvernian Empire, and soon after, a new federational government was formed under the name "Gallic Empire". The three tribes, then moved into Iberia, while the Burgundians settled in the area of OTL Rhineland-Palatinate along the Middle Rhine, establishing a Burgundian kingdom, which soon after, converted to Arian Christianity.

Meanwhile, the Salian Franks, which were settled in the Northern Rhine, frequently got into conflict with the Gauls and the Burgundians.

After the foundation of the Belgian Empire in 450, the Belgians, known as being skilled warriors, knocked the Salian Franks out of Gaul in 452, forcing them to resettle behind the Rhine.

Source
https://www.wikipedia.org/

Imperator Rome (https://imperator.paradoxwikis.com/Imperator_Wiki)

Flag credits
This flag was made by myself.