in the time of
Hadrian (ruled 117-138 AD), showing, in northeastern
Gaul, the
imperial province of
Gallia Belgica (Belgium/Picardie/Champagne)
Reform of Domitian (around 90) During the 1st century AD (estimated date 90 AD), the provinces of Gaul were restructured. Emperor
Domitian reorganized the provinces in order to separate the militarized zones of the Rhine from the civilian populations of the region. The northeastern part of Gallia Belgica was split off and renamed
Germania Inferior, later to be reorganized and renamed as
Germania Secunda. This included the eastern part of modern
Belgium, the southernmost part of the modern
Netherlands, and a part of modern Germany. The eastern part was split off to become
Germania Superior (parts of western Germany and eastern France) and the southern border of Gallia Belgica was extended to the south. The newer Gallia Belgica included the cities of
Camaracum (
Cambrai),
Nemetacum (
Arras),
Samarobriva (
Amiens),
Durocortorum (
Reims),
Dividorum (
Metz) and
Augusta Treverorum (
Trier).
Attack by the Chauci (173) In 173, the later emperor
Didius Julianus, then governor of Gallia Belgica, had to repel a serious invasion of the
Chauci, a Germanic tribe that lived along the shores of the
Wadden Sea at the respective northern and northwestern coast of present-day Netherlands and
Germany. The attack occurred in the
drainage basin of the river
Scheldt (present-day
Flanders and
Hainaut). Archaeologists have found evidence that large farms near
Tournai and the village
Velzeke (near
Ghent) had to be abandoned. Further the capitals in the areas of the former tribes of the
Atrebates,
Morini and the
Nervians were either burnt down (Nemetacum (
Arras)) or had to be rebuilt in the last quarter of the second century, Colonia Morinorum (
Thérouanne) and
Bagacum Nerviorum (
Bavay).
Crisis of the 3rd century and Gallic Empire With the
Crisis of the Third Century and the partition of the Empire, Roman control over Gaul deteriorated in the 3rd century. In 260,
Postumus became emperor of a breakaway
Gallic Empire. He proved able to stop the incursions from the Franks. Only in 274 was Roman control restored by the new emperor
Aurelian in the
Battle of Châlons. The cost of this defeat in the long run proved very high indeed. With the Gallic army defeated and not returning to the
Rhine border, the Franks overran the neighbouring province of
Germania Inferior. The
Rhineland (to the
Ripuarian Franks) and the area between the Rhine and the main road between Boulogne and Cologne, present-day South Holland, Zeeland, Flanders, Brabant and Limburg, the last three in both the present-day Netherlands and Belgium (to the
Salian Franks) were de facto lost forever for the Roman empire. This gave the Salian Franks a base from which they could expand some 130 years later, beginning after the disastrous Rhine crossing in 406, to conquer the whole area of the former province of Gallia Belgica and start the
Merovingian kingdom.
Reform of Diocletian (around 300) Emperor
Diocletian restructured the provinces around 300, and split Belgica into two provinces: Belgica Prima and Belgica Secunda. Belgica Prima had
Augusta Treverorum (Trier) as its main city, and consisted of the eastern part. The border between Belgica Prima and Belgica Secunda was approximately along the
Meuse.
Prosperous fourth century The eastern part of Gallia Belgica, especially the valley of the
Moselle became very prosperous in the fourth century, particularly in the decades that
Augusta Treverorum (Trier) was the capital of the
Western Roman Empire. The Roman poet
Ausonius wrote a famous poem on the Moselle. ==Germanic conquests (after 406)==