the Frankish monarchy, elective and secular until then, became hereditary and of divine right.

At the end of the Antiquity period, ancient Gaul was divided into several Germanic kingdoms (Early Francia (North), Alamannia (North-East), Burgundia (East), Septimania (South), Visigothic Aquitania (South East)) and a remaining Gallo-Roman territory, known as the Kingdom of Syagrius (West). Simultaneously, Celtic Britons, fleeing the Anglo-Saxon invasion of Britannia, settled the western part of Armorica (far West of Gaul). As a result, the Armorican peninsula was renamed Brittany, Celtic culture was revived and independent petty kingdoms arose in this region.
The pagan Franks, from whom the ancient name of "Francie" was derived, originally settled the northern part of Gaul, but under Clovis I conquered most of the other kingdoms in northern and central Gaul. In 498, Clovis I was the first Germanic conqueror after the fall of the Roman Empire to convert to Catholic Christianity, rather than Arianism; thus France was given the title "Eldest daughter of the Church" (French: La fille aînée de l’Église) by the papacy,[33] and the French kings would be called "the Most Christian Kings of France" (Rex Christianissimus).


With Clovis' conversion to Catholicism in 498, the Frankish monarchy, elective and secular until then, became hereditary and of divine right.
The Franks embraced the Christian Gallo-Roman heritage and ancient Gaul was eventually renamed Francia ("Land of the Franks"). The Germanic Franks adopted Romanic languages, except in northern Gaul where Roman settlements were less dense and where Germanic languages emerged. Clovis made Paris his capital and established the Merovingian dynasty, but his kingdom would not survive his death. The Franks treated land purely as a private possession and divided it among their heirs, so four kingdoms emerged from Clovis's: Paris, Orléans, Soissons, and Rheims.
The last Merovingian kings, sometimes referred as Rois fainéants ("lazy kings"), effectively lost power to their mayors of the palace. One mayor of the palace, Charles Martel, defeated a Muslim invasion force from Hispania at the Battle of Tours (732) and earned respect and power within the Frankish kingdoms. His son, Pepin the Short, eventually seized the crown of Francia from the weakened Merovingians and founded the Carolingian dynasty. Pepin's son, Charlemagne, reunited the Frankish kingdoms and built a vast empire across Western and Central Europe.
Proclaimed Holy Roman Emperor by Pope Leo III and thus establishing in earnest the French government's longtime historical association with the Roman Catholic Church,[34] Charlemagne tried to revive the Western Roman Empire and its cultural grandeur, from his Palace of Aachen. The efficient administration of this immense empire was ensured by high-level civil servants, carrying the, then non-hereditary, titles of counts (in charge of a County), marquis (in charge of a March), dukes (military commanders), etc.