section_path: History/Early Middle Ages (411–1000)
section_name: Early Middle Ages (411–1000)
paragraph_text: Early Middle Ages (411–1000)
  
  After the Roman government in the area collapsed in roughly the year 406, the Franks expanded their territories into numerous kingdoms. By the 490s, Clovis I had conquered and united all these territories in the southern Netherlands in one Frankish kingdom, and from there continued his conquests into Gaul. During this expansion, Franks migrating to the south (modern territory of France and Walloon part of Belgium) eventually adopted the Vulgar Latin of the local population. A widening cultural divide grew with the Franks remaining in their original homeland in the north (i.e. the southern Netherlands and Flanders), who kept on speaking Old Frankish, which by the ninth century had evolved into Old Low Franconian or Old Dutch. A Dutch-French language boundary hence came into existence.
  
  To the north of the Franks, climatic conditions improved, and during the Migration Period Saxons, the closely related Angles, Jutes, and Frisii settled the coast. Many moved on to England and came to be known as Anglo-Saxons, but those who stayed would be referred to as Frisians and their language as Frisian. Frisian was spoken along the entire southern North Sea coast. By the seventh century, a Frisian Kingdom (650–734) under King Aldegisel and King Redbad emerged with Traiectum (Utrecht) as its centre of power, while Dorestad was a flourishing trading place. Between 600 and around 719 the cities were often fought over between the Frisians and the Franks. In 734, at the Battle of the Boarn, the Frisians were defeated after a series of wars. With the approval of the Franks, the Anglo-Saxon missionary Willibrord converted the Frisian people to Christianity and established the Archdiocese of Utrecht. However, his successor Boniface was murdered by the Frisians in 754.
  
  The Frankish Carolingian empire controlled much of Western Europe. In 843, it was divided into three parts— East, Middle, and West Francia. Most of present-day Netherlands became part of Middle Francia, which was a weak kingdom and subject to numerous partitions and annexation attempts by its stronger neighbours. It comprised territories from Frisia in the north to the Kingdom of Italy in the south. Around 850, Lothair I of Middle Francia acknowledged the Viking Rorik of Dorestad as ruler of most of Frisia. When the kingdom of Middle Francia was partitioned in 855, the lands north of the Alps passed to Lothair II and subsequently were named Lotharingia. After he died in 869, Lotharingia was partitioned, into Upper and Lower Lotharingia, the latter comprising the Low Countries that became part of East Francia in 870. Around 879, another Viking expedition led by Godfrid, Duke of Frisia, raided the Frisian lands. Resistance to the Vikings, if any, came from local nobles, who gained in stature as a result, and that laid the basis for the disintegration of Lower Lotharingia into semi-independent states. One of these local nobles was Gerolf of Holland, who assumed lordship in Frisia, and Viking rule came to an end.