Brief introduction of Gaul

Latin Galli (French Gaule) is the Roman name for the territory where the Celtic Gaul (French Gaulois) lived, including France, Belgium, Luxembourg and parts of the Netherlands, Switzerland and Germany in the west, and the Rhine River and Wave Valley in present-day Italy. The ancient boundaries of Gaul are the Rhine and Alps in the east, Marenostrom (Mediterranean) in the south, valleys and Pyrenees, and the Atlantic Ocean in the west and north. Before the Roman conquest by Caesar (58-51 BC), the name "Gaul" was equivalent to the religious and national alliance established in the cultural and military fields, although they had the same origin. The origin of this similarity can be traced back to the 8th century, when the immigrant groups of the culture in the bronze age slowly spread in the future Gaul territory. Around 39 BC, Gauls invaded and looted Rome. In 222 BC, Cisalpine Gaul (the area between the Alps and the Valley of the Wave) was conquered by the Romans. We know that the first chapter of Caius's The Battle of Gaul in Rome best illustrates Caesar. This is obviously the Roman view of Gaul's reality:

The whole Gaul is divided into three parts, one of which is inhabited by Belgians, and the other is Aquitani, who are called Celts in their own language and the third part among our Gauls. All these are different in language, customs and laws. The Garonne River separates the Gauls from the Aquitanis; The rivers Marne and Seine separate them from the Belgian River. Among all these, Belgians are the bravest, because they are farthest from the civilization and elegance of our province, and businessmen seldom turn to them for help and import things that tend to weaken their minds; They are the closest people to the Germans living outside the Rhine, and they constantly wage war with them; For this reason, the Helvetians are also more heroic than other Gauls, because they are fighting the Germans almost every day. They either repel them from their own territory or wage war on their own borders. It is said that part of the Gaul occupation began on the Rhone River: it was bounded by the Garonne River, the sea and the territory of Belgium; it also extended northward with Sequani and Helvetii on the Rhine River. Belgae rises from the extreme boundary of Gaul and extends to the lower reaches of the Rhine River. Look at the rising sun in the north and Ran Ran. Aquitania extends from the Garonne River to the Pyrenees and the part of the ocean near Spain: it looks between sunset and Polaris.

after Julius Caesar conquered Gaul, the territorial organization of Gaul, which was a part of the Roman empire, was terminated by Emperor Augustus from 27 BC to 12 BC: respecting the ancient organization described by Julius Caesar, Augustus founded three Roman provinces: Gallia Belgica, Gallia Lugdunensis and Gallia Lugdunensis. Akitania. In the south, the old Roman province, which joined Massilia, was renamed galiana Narbonensis. The territory along the Rhine merged into two military zones, which became Upper Germania and Lower Germania under Titus Flavius Domitianus. For about 2 years, Pax romana has remained unchanged, except for rebellion and civil strife in some places. The Germanic invasion in the 3rd century marked the end of this era.