Treaty of Verdun in the context of "Duchy of Saxony"

France, officially the French Republic, is a country primarily located in Western Europe. Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the North Atlantic, the French West Indies, and many islands in Oceania and the Indian Ocean, giving it the largest discontiguous exclusive economic zone in the world. Metropolitan France shares borders with Belgium and Luxembourg to the north; Germany to the northeast; Switzerland to the east; Italy and Monaco to the southeast; Andorra and Spain to the south; and a maritime border with the United Kingdom to the northwest. Its metropolitan area extends from the Rhine to the Atlantic Ocean and from the Mediterranean Sea to the English Channel and the North Sea. Its 18 integral regions—five of which are overseas—span a combined area of 632,702 km (244,288 sq mi) and have an estimated total population of over 68.6 million as of January 2025. France is a semi-presidential republic. Its capital, largest city and main cultural and economic centre is Paris.

Metropolitan France was settled during the Iron Age by Celtic tribes known as Gauls before Rome annexed the area in 51 BC, leading to a distinct Gallo-Roman culture. In the Early Middle Ages, the Franks formed the kingdom of Francia, which became the heartland of the Carolingian Empire. The Treaty of Verdun of 843 partitioned the empire, with West Francia evolving into the Kingdom of France. In the High Middle Ages, France was a powerful but decentralised feudal kingdom, but from the mid-14th to the mid-15th centuries, France was plunged into a dynastic conflict with England known as the Hundred Years' War. In the 16th century French culture flourished during the French Renaissance, and a French colonial empire emerged. Internally, France was dominated by the conflict with the House of Habsburg and the French Wars of Religion between Catholics and Huguenots. France was successful in the Thirty Years' War and further increased its influence during the reign of Louis XIV.

The Kingdom of France is the historiographical name or umbrella term given to various political entities of France in the medieval and early modern period. It was one of the most powerful states in Europe from the High Middle Ages to 1848 during its dissolution. It was also an early colonial power, with colonies in Asia and Africa, and the largest being New France in North America geographically centred on the Great Lakes.

The Kingdom of France was descended directly from the western Frankish realm of the Carolingian Empire, which was ceded to Charles the Bald with the Treaty of Verdun (843). A branch of the Carolingian dynasty continued to rule until 987, when Hugh Capet was elected king and founded the Capetian dynasty. The territory remained known as Francia and its ruler as rex Francorum ('king of the Franks') well into the High Middle Ages. The first king calling himself rex Francie ('King of France') was Philip II, in 1190, and officially from 1204. From then, France was continuously ruled by the Capetians and their cadet lines under the Valois and Bourbon until the monarchy was abolished in 1792 during the French Revolution. The Kingdom of France was also ruled in personal union with the Kingdom of Navarre over two time periods, 1284–1328 and 1572–1620, after which the institutions of Navarre were abolished and it was fully annexed by France (though the King of France continued to use the title "King of Navarre" through the end of the monarchy).

In medieval historiography, West Francia (Medieval Latin: Francia occidentalis) or the Kingdom of the West Franks (Latin: regnum Francorum occidentalium) constitutes the initial stage of the Kingdom of France and extends from the Treaty of Verdun in 843 to 987, the beginning of the Capetian dynasty. It was created from the division of the Carolingian Empire following the death of Louis the Pious, with its neighbor East Francia eventually evolving into the Kingdom of Germany.

West Francia extended further north and south than modern metropolitan France, but it did not extend as far east. It did not include such future French holdings as Lorraine, the County and Kingdom of Burgundy (the duchy was already a part of West Francia), Alsace and Provence in the east and southeast for example. It also did not include the Brittany peninsula in the west.

Charles the Bald (French: Charles le Chauve; 13 June 823 – 6 October 877), also known as Charles II of West Francia, was a 9th-century king of West Francia (843–77), King of Italy (875–77) and emperor of the Carolingian Empire (875–77). After a series of civil wars during the reign of his father, Louis the Pious, Charles succeeded, by the Treaty of Verdun (843), in acquiring the western third of the empire. He was a grandson of Charlemagne and the youngest son of Louis the Pious by his second wife, Judith.

The Kingdom of Germany or German Kingdom (Latin: regnum Teutonicorum 'kingdom of the Germans', regnum Teutonicum 'German kingdom', regnum Alamanie "kingdom of Germany", German: Deutsches Königreich) was the mostly Germanic language-speaking East Frankish kingdom, which was formed by the Treaty of Verdun in 843. The king was elected, initially by the rulers of the stem duchies, who generally chose one of their own. After 962, when Otto I was crowned emperor, East Francia formed the bulk of the Holy Roman Empire, which also included the Kingdom of Italy and, after 1032, the Kingdom of Burgundy.

Like medieval England and medieval France, medieval Germany consolidated from a conglomerate of smaller tribes, nations or polities by the High Middle Ages. The term rex teutonicorum ('king of the Germans') first came into use in Italy around the year 1000. It was popularized by the chancery of Pope Gregory VII during the Investiture Controversy (late 11th century), perhaps as a polemical tool against Emperor Henry IV. In the 12th century, in order to stress the imperial and transnational character of their office, the emperors began to employ the title rex Romanorum (king of the Romans) on their election.

The Carolingian civil war was a violent crisis over the succession to the Carolingian Empire following the death of Emperor Louis the Pious in June 840 and lasting until the Treaty of Verdun in August 843. Louis's eldest son, the emperor Lothar I, laid claim to an undivided empire, while his younger brothers Louis the German and Charles the Bald sought large kingdoms of their own on the basis of previous divisions planned by the late emperor. Their nephew, Pippin II, laid claim to Aquitaine.

After Louis the Pious's death, Lothar moved immediately to disregard the division of the empire and secure for himself his father's imperial position. He reached out to Pippin in Aquitaine for support against Charles. Not content with Bavaria alone, Louis the German occupied the Rhineland laying claim to all of Germania. The first military move of the budding civil war was Lothar's campaign that forced Louis from the Rhineland in August. It increased Lothar's prestige in the east, but ended in an armistice. Lothar then marched to the Seine in September, laying claim to Neustria, before reaching a truce with Charles.

East Francia (Latin: Francia orientalis) or the Kingdom of the East Franks (Regnum Francorum orientalium) was a successor state of the Carolingian Empire ruled by the Carolingian dynasty until 911. It was established through the 843 Treaty of Verdun which divided the former kingdom of Francia into three kingdoms: Francia Orientalis (the East Frankish kingdom); Francia Media (the Middle Frankish kingdom); and Francia Occidentalis (the West Frankish kingdom).

The east–west division with the Treaty of Verdun, enforced by the Germanic-Latin language split, "gradually hardened into the establishment of separate kingdoms", with East Francia becoming (or being) the Kingdom of Germany, and West Francia becoming the Kingdom of France.

Burgundy (/ˈbɜːrɡəndi/ BUR-gən-dee, French: Bourgogne [buʁɡɔɲ] ; Burgundian: Bregogne) is a historical region in France, encompassing the territory of the former administrative region of the same name, that existed from 1982 to 2015, and was merged since 1 January 2016 into the newly created administrative region of Bourgogne-Franche-Comté, encompassing its western half. In historical terms, that region was formed as the Duchy of Burgundy, which existed between the 10th and the 18th century. During the late medieval and early modern periods, the region was of great political importance, being the core of the Valois-Burgundian State, and also becoming a focal point of diplomacy and courtly culture that set the fashion for European royal houses and their courts. The regional capital, Dijon, was wealthy and powerful, being a major European centre of art and science, and of Western Monasticism.

The modern Burgundy encompasses only the north-western parts of the ancient Kingdom of the Burgundians, that had much wider territorial scope. In 843, under the Treaty of Verdun, old Burgundian lands were divided, with all of north-western regions being assigned to the West Frankish Kingdom. Since the beginning of the 10th century, those regions were organized as the Duchy of Burgundy, remaining under the sovereignty of the Kingdom of France. Since 1004, the House of Burgundy, a cadet branch of the French royal House of Capet, ruled over the Duchy, that roughly conformed to the borders and territories of the later administrative region of Burgundy. Upon the extinction of the Burgundian male line the duchy reverted to the King of France and the House of Valois.