Francia or Frankia, later also called the Frankish Empire (Latin: imperium Francorum), Frankish Kingdom (Latin: regnum Francorum, "Kingdom of the Franks"), Frankish Realm or occasionally Frankland (Persian: فرنگستان, Frangistan, "Land of the Franks"), was the territory inhabited and ruled by the Franks from the 3rd to the 10th century. Under the nearly continuous campaigns of Charles Martel, Pepin the Short, and Charlemagne—father, son, grandson—the greatest expansion of the Frankish empire was secured by the early 9th century.
The tradition of dividing patrimonies among brothers meant that the Frankish realm was ruled, nominally, as one polity subdivided into several regna (kingdoms or subkingdoms). The geography and number of subkingdoms varied over time, but the particular term Francia came generally to refer to just one regnum, that of Austrasia, centred on the Rhine and Meuse rivers in northern Europe; even so, sometimes the term was used as well to encompass Neustria north of the Loire and west of the Seine. Eventually, the singular use of the name Francia shifted towards Paris, and settled on the region of the Seine basin surrounding Paris, which still today bears the name Île-de-France, and which region gave its name to the entire Kingdom of France.
The first recorded naming of Francia is in the Panegyrici Latini of the early third century. At the time it described the area north and east of the Rhine, roughly in the triangle between Utrecht, Bielefeld, and Bonn. It corresponded with the joint lands of Frankish tribes of the Sicambri, Salians, Bructeri, Ampsivarii, Chamavi and Chattuarii. Some of these peoples like the Sicambri and Salians already had lands in the Roman Empire and delivered troops to Roman forces at the border. In 357 the Salian king entered the Roman Empire and made a permanent foothold there by a treaty granted by Julian the Apostate, who forced back the Chamavi to Hamaland.
As Frankish territory expanded, the meaning of "Francia" expanded with it. While many Franks operating on Roman soil, like Bauto and Arbogastes, were committed to the cause of the Romans, other Frankish kings, like Mallobaudes, were active on Roman soil for other reasons. After the fall of Arbogastes, his son Arigius succeeded in establishing a hereditary countship at Trier and after the fall of the usurper Constantine III some Franks supported the usurper Jovinus (411). Although Jovinus was dead by 413, the Romans could no longer manage the Franks within their borders.
The Frankish king Theudemer was executed by the sword, but to no avail. Around 428 the Salian king Chlodio, whose kingdom included Toxandria and the civitatus Tungrorum (Tongeren), launched an attack on Roman territory and extended his realm as far as Camaracum (Cambrai) and the Somme. Though Sidonius Apollinaris relates that Flavius Aëtius fought the Franks and temporarily drove them back (c. 431), this period marks the beginning of a situation that would endure for many centuries: the Germanic Franks ruled over an increasing number of Gallo-Roman subjects.
The kingdom of Chlodio changed the borders and the meaning of the word "Francia" permanently. Francia was no longer barbaricum trans Rhenum (barbarians across the Rhine), but a landed political power on both sides of the river, deeply involved in Roman politics. Chlodio's family, the Merovingians, extended Francia even further south. Due to pressure from the Saxons, the northeastern borders of Francia were pressed southwest so that most of the original Frankish people came to live more southwesterly, roughly between the Somme and Münster.
Chlodio's successors are obscure figures, but what can be certain is that Childeric I, possibly his grandson, ruled a Salian kingdom from Tournai as a foederatus of the Romans. Childeric is chiefly important to history for bequeathing the Franks his son Clovis, who began an effort to extend his authority over the other Frankish tribes and to expand their territorium south and west into Gaul. Clovis converted to Roman Catholicism and put himself on good terms with the powerful Church and with his Gallo-Roman subjects. In a thirty-year reign (481–511) he defeated the Roman general Syagrius and conquered the Roman enclave of Soissons, defeated the Alemanni (Tolbiac, 504) and established Frankish hegemony over them, defeated the Visigoths (Vouillé, 507) and conquered their entire kingdom (save Septimania) with its capital at Toulouse, and conquered the Bretons (according to Gregory of Tours) and made them vassals of Francia. He conquered most or all of the neighbouring Frankish tribes along the Rhine and incorporated them into his kingdom. He also incorporated the various Roman military settlements (laeti) scattered over Gaul: the Saxons of Bessin, the Britons and the Alans of Armorica and Loire valley or the Taifals of Poitou to name a few prominent ones. By the end of his life, he ruled all of Gaul save the Gothic province of Septimania and the Burgundian kingdom in the southeast.
The Merovingians were a hereditary monarchy. The Frankish kings adhered to the practice of partible inheritance: dividing their lands among their sons. Even when multiple Merovingian kings ruled, the kingdom—not unlike the late Roman Empire—was conceived of as a single realm ruled collectively by several kings and the turn of events could result in the reunification of the whole realm under a single king. The Merovingian kings ruled by divine right and their kingship was symbolised daily by their long hair and initially by their acclamation, which was carried out by raising the king on a shield in accordance with the ancient Germanic practice of electing a war-leader at an assembly of the warriors. At the death of Clovis, his kingdom was divided territorially by his four adult sons in such a way that each son was granted a comparable portion of fiscal land, which was probably land once part of the Roman fisc, now ceased by the Frankish government.
Clovis' sons made their capitals near the Frankish heartland in northeastern Gaul. Theuderic I made his capital at Reims, Chlodomer at Orléans, Childebert I at Paris, and Chlothar I at Soissons. During their reigns, the Thuringii (532), Burgundes (534), and Saxons and Frisians (c. 560) were incorporated into the Frankish kingdom. The outlying trans-Rhenish tribes were loosely attached to Frankish sovereignty, and though they could be forced to contribute to Frankish military efforts, in times of weak kings they were uncontrollable and liable to attempt independence. The Romanised Burgundian kingdom, however, was preserved in its territoriality by the Franks and converted into one of their primary divisions, incorporating the central Gallic heartland of Chlodomer's realm with its capital at Orléans.
The fraternal kings, however, showed only intermittent signs of friendship and were often in rivalry. On the early death of Chlodomer, his brother Chlothar had his young sons murdered in order to take a share of his kingdom, which was, in accordance with custom, divided between the surviving brothers. Theuderic died in 534, but his adult son Theudebert I was capable of defending his inheritance, which formed the largest of the Frankish subkingdoms and the kernel of the later kingdom of Austrasia. Theudebert was the first Frankish king to formally sever his ties to the Byzantine Empire by striking gold coins with his own image on them and calling himself magnus rex (great king) because of his supposed suzerainty over peoples as far away as Pannonia. Theudebert interfered in the Gothic War on the side of the Gepids and Lombards against the Ostrogoths, receiving the provinces of Rhaetia, Noricum, and part of Venetia. His son and successor, Theudebald, was unable to retain them and on his death all of his vast kingdom passed to Chlothar. In 558, with the death of Childebert, the entire Frankish realm was reunited under the rule of one king, Chlothar.
In 561 Chlothar died and his realm was divided, in a replay of the events of fifty years prior, between his four sons, with the chief cities remaining the same. The eldest son, Charibert I, inherited the kingdom with its capital at Paris and ruled all of western Gaul. The second eldest, Guntram, inherited the old kingdom of the Burgundians, augmented by the lands of central France around the old capital of Orléans, which became his chief city, and most of Provence. The rest of Provence, the Auvergne, and eastern Aquitaine were assigned to the third son, Sigebert I, who also inherited Austrasia with its chief cities of Reims and Metz. The smallest kingdom was that of Soissons, which went to the youngest son, Chilperic I. The kingdom Chilperic ruled at his death (584) became the nucleus of later Neustria.
This second fourfold division was quickly ruined by fratricidal wars, waged largely over the murder of Galswintha, the wife of Chilperic, allegedly by his mistress (and second wife) Fredegunda. Galswintha's sister, the wife of Sigebert, Brunhilda, incited her husband to war and the conflict between the two queens continued to plague relations until the next century. Guntram sought to keep the peace, though he also attempted twice (585 and 589) to conquer Septimania from the Goths, but was defeated both times. All the surviving brothers benefited at the death of Charibert, but Chilperic was also able to extend his authority during the period of war by bringing the Bretons to heel again. After his death, Guntram had to again force the Bretons to submit. In 587, the Treaty of Andelot — the text of which explicitly refers to the entire Frankish realm as Francia — between Brunhilda and Guntram secured his protection of her young son Childebert II, who had succeeded the assassinated Sigebert (575). Together the territory of Guntram and Childebert was well over thrice as large as the small realm of Chilperic's successor, Chlothar II. During this period Francia took on the tripartite character it was to have throughout the rest of its history, being composed of Neustria, Austrasia, and Burgundy.
When Guntram died in 592, Burgundy went to Childebert in its entirety, but he died in 595. His two sons divided the kingdom, with the elder Theudebert II taking Austrasia plus Childebert's portion of Aquitaine, while his younger brother Theuderic II inherited Burgundy and Guntram's Aquitaine. United, the brothers sought to remove their cousin Chlothar from power and they did succeed in conquering most of his kingdom, reducing him to only a few cities, but they failed to capture him. In 599 they routed his forces at Dormelles and seized the Dentelin, but they then fell foul of each other and the remainder of their time on the thrones was spent in infighting, often incited by their grandmother Brunhilda, who, angered over her expulsion from Theudebert's court, convinced Theuderic to unseat him and kill him. In 612 he did and the whole realm of his father Childebert was once again ruled by one man. This was short-lived, however, as he died on the eve of preparing an expedition against Chlothar in 613, leaving a young son named Sigebert II. During their reigns, Theudebert and Theuderic campaigned successfully in Gascony, where they had established the Duchy of Vasconia and brought the Basques to submission (602). This original Gascon conquest included lands south of the Pyrenees, namely Biscay and Guipúzcoa, but these were lost to the Visigoths in 612. On the opposite end of his realm, the Alemanni had defeated Theuderic in a rebellion and the Franks were losing their hold on the trans-Rhenish tribes. In 610 Theudebert had extorted the Duchy of Alsace from Theuderic, beginning a long period of conflict over which kingdom was to have the region of Alsace, Burgundy or Austrasia, which was only terminated in the late seventh century.
During the brief minority of Sigebert II, the office of the mayor of the palace, which had for sometime been visible in the kingdoms of the Franks, came to the fore in its internal politics, with a faction of nobles coalescing around the persons of Warnachar, Rado, and Pepin of Landen, to give the kingdom over to Chlothar in order to remove Brunhilda, the young king's regent, from power. Warnachar was himself already the mayor of the palace of Austrasia, while Rado and Pepin were to find themselves rewarded with mayoral offices after Chlothar's coup succeeded and Brunhilda and the ten-year old king were killed.
Immediately after his victory, Chlothar II promulgated the Edict of Paris (614), which has generally been viewed as a concession to the nobility, though this view has come under recent criticism. The Edict primarily sought to guarantee justice and end corruption in government, but it also entrenched the regional differences between the three kingdoms of Francia and probably granted the nobles more control over judicial appointments. By 623 the Austrasians had begun to clamour for a king of their own, since Chlothar was so often absent from the kingdom and, because of his upbringing and previous rule in the Seine basin, was more or less an outsider there. Chlothar thus granted that his son Dagobert I would be their king and he was duly acclaimed by the Austrasian warriors in the traditional fashion. Nonetheless, though Dagobert exercised true authority in his realm, Chlothar maintained ultimate control over the whole Frankish kingdom.
During the joint reign of Chlothar and Dagobert, who have been called "the last ruling Merovingians", the Saxons, who had been loosely attached to Francia since the late 550s, rebelled under Duke Berthoald and were defeated and reincorporated into the kingdom by the joint action of father and son. When Chlothar died in 628, Dagobert, in accordance with his father's wishes, granted a subkingdom to his younger brother Charibert II. This subkingdom, commonly called Aquitaine, was a new creation. It corresponded to the southern half of the old Roman province of Aquitaine and its capital was at Toulouse. The other cities of his kingdom were Cahors, Agen, Périgueux, Bordeaux, and Saintes; the duchy of Vasconia was also part of his allotment. Charibert campaigned successfully against the Basques, but after his death they revolted again (632). At the same time the Bretons rose up against Frankish suzerainty. The Breton leader Judicael ap Hoel relented and made peace with the Franks and paid tribute after Dagobert threatened to lead an army against him (635). That same year Dagobert sent an army to subdue the Basques, which it did.
Meanwhile, Dagobert had had Charibert's infant successor Chilperic assassinated and reunited the entire Frankish realm again (632), though he was forced by the strong Austrasian aristocracy to grant his own son Sigebert III to them as a subking in 633. This act was precipitated largely by the Austrasians desire to be self-governing at a time when Neustrians dominated at the royal court. Chlothar had been the king at Paris for decades before becoming the king at Metz as well and the Merovingian monarchy was ever after him to be a Neustrian monarchy first and foremost. Indeed, it is in the 640s that "Neustria" first appears in writing, its late appearance relative to "Austrasia" probably due to the fact that Neustrians (who formed the bulk of the authors of the time) called their region simply "Francia". Burgundia too defined itself in opposition to Neustria at about this time. However, it was the Austrasians, who had been seen as a distinct people within the realm since the time of Gregory of Tours, who were to make the most strident moves for independence. Dagobert, in his dealings with the Saxons, Alemans, and Thuringii, as well as the Slavic peoples beyond the borders of Francia, upon whom he tried to force tribute but who instead defeated him under their king Samo at the Battle of Wogastisburg, made all the far eastern peoples subject to the court of Neustria and not of Austrasia. This, first and foremost, incited the Austrasians to request a king of their own from the royal household.
The young Sigebert was dominated during his minority by the mayor Grimoald I, who convinced the childless king to adopt his own Merovingian-named son Childebert as his son and heir. After Dagobert's death in 639, the duke of Thuringia, Radulf, rebelled and tried to make himself king. He defeated Sigebert in what was a serious reversal for the ruling dynasty (640). The king lost the support of many magnates while on campaign and the weakness of the monarchic institutions by that time are evident in his inability to effectively make war without the support of the magnates; in fact, he could not even provide his own bodyguard without the loyal aid of Grimoald and Adalgisel. He is often regarded as the first roi fainéant: "do-nothing king", not insofar as he "did nothing", but insofar as he accomplished little.
Clovis II, Dagobert's successor in Neustria and Burgundy, which were thereafter attached yet ruled separately, was a minor for almost the whole of his reign. He was dominated by his mother Nanthild and the mayor of the Neustrian palace, Erchinoald. Erchinoald's successor, Ebroin, dominated the kingdom for the next fifteen years of near-constant civil war. On his death (656), Sigbert's son was shipped off to Ireland while Grimoald's son Childebert reigned in Austrasia. Ebroin eventually reunited the entire Frankish kingdom for Clovis's successor Chlothar III by killing Grimoald and removing Childebert in 661. However, the Austrasians demanded a king of their own again and Chlothar installed his younger brother Childeric II. During Chlothar's reign, the Franks had made an attack on northwestern Italy, but were driven off by the Lombard king Grimoald near Rivoli.
In 673, Chlothar III died and some Neustrian and Burgundian magnates invited Childeric to become king of the whole realm, but he soon upset some Neustrian magnates and he was assassinated (675). The reign of Theuderic III was to prove the end of the Merovingian dynasty's power. Thoroughly Neustrian in outlook, he allied with his mayor Berthar and made war on the Austrasian who had installed Dagobert II, Sigebert III's son, in their kingdom (briefly in opposition to Clovis III). In 687 he was defeated by Pepin of Heristal, the Arnulfing mayor of Austrasia and the real power in that kingdom, at the Battle of Tertry and was forced to accept Pepin as sole mayor and dux et princeps Francorum: "Duke and Prince of the Franks", a title which signifies, to the author of the Liber Historiae Francorum, the beginning of Pepin's "reign". Thereafter the Merovingian monarchs showed only sporadically, in our surviving records, any activities of a non-symbolic and self-willed nature.
During the period of confusion in the 670s and 680s, attempts had been made to re-assert Frankish suzerainty over the Frisians, but to no avail. In 689, however, Pepin launched a campaign of conquest in Western Frisia (Frisia Citerior) and defeated the Frisian king Radbod near Dorestad, an important trading centre. All the land between the Scheldt and the Vlie was incorporated into Francia. Then, circa 690, Pepin attacked central Frisia and took Utrecht. In 695 Pepin could even sponsor the foundation of the Archdiocese of Utrecht and the beginning of the conversion of the Frisians under Willibrord. However, Eastern Frisia (Frisia Ulterior) remained outside of Frankish suzerainty.
Having achieved great successes against the Frisians, Pepin turned towards the Alemanni. In 709 he launched a war against Willehari, duke of the Ortenau, probably in an effort to force the succession of the young sons of the deceased Gotfrid on the ducal throne. This outside interference led to another war in 712 and the Alemanni were, for the time being, restored to the Frankish fold. However, in southern Gaul, which was not under Arnulfing influence, the regions were pulling away from the royal court under leaders such as Savaric of Auxerre, Antenor of Provence, and Odo of Aquitaine. The reigns of Clovis IV and Childebert III from 691 until 711 have all the hallmarks of those of rois fainéants, though Childebert is founding making royal judgements against the interests of his supposed masters, the Arnulfings.
When Pepin died in 714, however, the Frankish realm plunged into civil war and the dukes of the outlying provinces became de facto independent. Pepin's appointed successor, Theudoald, under his widow, Plectrude, initially opposed an attempt by the king, Dagobert III, to appoint Ragenfrid as mayor of the palace in all the realms, but soon there was a third candidate for the mayoralty of Austrasia in Pepin's illegitimate adult son, Charles Martel. After the defeat of Plectrude and Theudoald by the king (now Chilperic II) and Ragenfrid, Charles briefly raised a king of his own, Chlothar IV, in opposition to Chilperic. Finally, at a battle near Soisson, Charles definitively defeated his rivals and forced them into hiding, eventually accepting the king back on the condition that he receive his father's positions (718). There were no more active Merovingian kings after that point and Charles and his Carolingian heirs ruled the Franks.
After 718 Charles Martel embarked on a series of wars intended to strengthen the Franks' hegemony in western Europe. In 718 he defeated the rebellious Saxons, in 719 he overran Western Frisia, in 723 he suppressed the Saxons again, and in 724 he defeated Ragenfrid and the rebellious Neustrians, ending the civil war phase of his rule. In 720, when Chilperic II died, he had appointed Theuderic IV king, but this last was a mere puppet of his. In 724 he forced his choice of Hugbert for the ducal succession upon the Bavarians of Hugbert and forced the Alemanni to assist him in his campaigns in Bavaria (725 and 726), where laws were promulgated in Theuderic's name. In 730 Alemannia had to be subjugated by the sword and its duke, Lantfrid, was killed. In 734 Charles fought against Eastern Frisia and finally subdued it.
In the 730s the Arab conquerors of Spain, who had also subjugated Septimania, began advancing northwards into central Francia and the Loire valley. It was at this time (circa 736) that Maurontus, the dux of Provence, called in the Arabs to aid him in resisting the expanding influence of the Carolingians. However, Charles invaded the Rhone valley with his brother Childebrand and a Lombard army and devastated the region. It was because of the alliance against the Arabs that Charles was unable to support Pope Gregory III against the Lombards. In 732 or 737—modern scholars have debated over the date—Charles marched against an Arab army between Poitiers and Tours and defeated it in a watershed battle that turned back the tide of the Arab advance north of the Pyrenees; but Charles' real interests lay in the northeast, primarily with the Saxons, from whom he had to extort the tribute which for centuries they had paid to the Merovingians.
Shortly before his death in October 741, Charles divided the realm as if he were king between his two sons by his first wife, marginalising his younger son Grifo, who did receive a small portion (it is unknown exactly what). Though there had been no king since Theuderic's death in 737, Charles' sons Pepin the Short and Carloman were still only mayors of the palaces. The Carolingians had assumed the regal status and practice, though not the regal title, of the Merovingians. The division of the kingdom gave Austrasia, Alemannia, and Thuringia to Carloman and Neustria, Provence, and Burgundy to Pepin. It is indicative of the de facto autonomy of the duchies of Aquitaine (under Hunoald) and Bavaria (under Odilo) that they were not included in the division of the regnum.
After Charles Martel was buried, in the Abbey of Saint-Denis alongside the Merovingian kings, conflict immediately erupted between Pepin and Carloman on one side and Grifo their younger brother on the other. Though Carloman captured and imprisoned Grifo, it may have been enmity between the elder brothers that caused Pepin to release Grifo while Carloman was on a pilgrimage to Rome. Perhaps in an effort to neutralise his brother ambitions, Carloman initiated the appointment of a new king, Childeric III, drawn from a monastery, in 743. Others have suggested that perhaps the position of the two brothers was weak or challenged, or perhaps there Carloman was merely acting for a loyalist or legitimist party in the kingdom.
In 743 Pepin campaigned against Odilo and forced him to submit to Frankish suzerainty. Carloman also campaigned against the Saxons and the two together defeated a rebellion led by Hunoald at the head of the Basques and another led by Alemanni, in which Liutfrid of Alsatia probably died, either fighting for or against the brothers. In 746, however, the Frankish armies were still, as Carloman was preparing to retire from politics and enter the monastery of Mount Soracte. Pepin's position was further stabilised and the path was laid for his assumption of the crown in 751.
Pepin reigned as an elected king. Although such elections happened infrequently, a general rule in Germanic law stated that the king relied on the support of his leading men. These men reserved the right to choose a new "kingworthy" leader out of the ruling clan if they felt that the old one could not lead them in profitable battle. While in later France the kingdom became hereditary, the kings of the later Holy Roman Empire proved unable to abolish the elective tradition and continued as elected rulers until the empire's formal end in 1806.
Pepin solidified his position in 754 by entering into an alliance with Pope Stephen II, who presented the king of the Franks a copy of the forged "Donation of Constantine" at Paris and in a magnificent ceremony at Saint-Denis anointed the king and his family and declared him patricius Romanorum ("protector of the Romans"). The following year Pepin fulfilled his promise to the pope and retrieved the Exarchate of Ravenna, recently fallen to the Lombards, and returned it to the Papacy. Pepin donated the re-conquered areas around Rome to the Pope, laying the foundation for the Papal States in the "Donation of Pepin" which he laid on the tomb of St Peter. The papacy had good cause to expect that the remade Frankish monarchy would provide a deferential power base (potestas) in the creation of a new world order, centred on the Pope.
Upon Pepin's death in 768, his sons, Charles and Carloman, once again divided the kingdom between themselves. However, Carloman withdrew to a monastery and died shortly thereafter, leaving sole rule to his brother, who would later become known as Charlemagne or Charles the Great, a powerful, intelligent, and modestly literate figure who became a legend for the later history of both France and Germany. Charlemagne restored an equal balance between emperor and pope.
From 772 onwards, Charles conquered and eventually defeated the Saxons to incorporate their realm into the Frankish kingdom. This campaign expanded the practice of non-Roman Christian rulers undertaking the conversion of their neighbours by armed force; Frankish Catholic missionaries, along with others from Ireland and Anglo-Saxon England, had entered Saxon lands since the mid-8th century, resulting in increasing conflict with the Saxons, who resisted the missionary efforts and parallel military incursions. Charles' main Saxon opponent, Widukind, accepted baptism in 785 as part of a peace agreement, but other Saxon leaders continued to fight. Upon his victory in 787 at Verdun, Charles ordered the wholesale killing of thousands of pagan Saxon prisoners. After several more uprisings, the Saxons suffered definitive defeat in 804. This expanded the Frankish kingdom eastwards as far as the Elbe river, something the Roman empire had only attempted once, and at which it failed in the Battle of the Teutoburg Forest (9 AD). In order to more effectively Christianize the Saxons, Charles founded several bishoprics, among them Bremen, Münster, Paderborn, and Osnabrück.
At the same time (773–774), Charles conquered the Lombards and thus included northern Italy in his sphere of influence. He renewed the Vatican donation and the promise to the papacy of continued Frankish protection.
In 788, Tassilo, dux (duke) of Bavaria rebelled against Charles. Quashing the rebellion incorporated Bavaria into Charles' kingdom. This not only added to the royal fisc, but also drastically reduced the power and influence of the Agilolfings (Tassilo's family), another leading family among the Franks and potential rivals. Until 796, Charles continued to expand the kingdom even farther southeast, into today's Austria and parts of Croatia.
Charles thus created a realm that reached from the Pyrenees in the southwest (actually, including an area in Northern Spain (Marca Hispanica) after 795) over almost all of today's France (except Brittany, which the Franks never conquered) eastwards to most of today's Germany, including northern Italy and today's Austria. In the hierarchy of the church, bishops and abbots looked to the patronage of the king's palace, where the sources of patronage and security lay. Charles had fully emerged as the leader of Western Christendom, and his patronage of monastic centres of learning gave rise to the "Carolingian Renaissance" of literate culture. Charles also created a large palace at Aachen, a series of roads, and a canal.
On Christmas Day, 800, Pope Leo III crowned Charles as "Emperor of the Romans" in Rome in a ceremony presented as a surprise (Charlemagne did not wish to be indebted to the bishop of Rome), a further papal move in the series of symbolic gestures that had been defining the mutual roles of papal auctoritas and imperial potestas. Though Charlemagne, in deference to Byzantine outrage, preferred the title "Emperor, king of the Franks and Lombards", the ceremony formally acknowledged the Frankish Empire as the successor of the (Western) Roman one (although only the forged "Donation" gave the pope political authority to do this), thus triggering a series of disputes with the Byzantines around the Roman name. After an initial protest at the usurpation, in 812, the Byzantine Emperor Michael I Rhangabes acknowledged Charlemagne as co-Emperor. The coronation gave permanent legitimacy to Carolingian primacy among the Franks. The Ottonians later resurrected this connection in 962.
Upon Charlemagne's death on 28 January 814 in Aachen, he was buried in his own Palace Chapel at Aachen. Unlike the previous Roman Empire, which had never been advanced beyond the Rhine after the disaster at the Battle of the Teutoburg Forest, Charlemagne crushed all German and Slavic resistance he faced and extended his realm completely to the Elbe.
Charlemagne had several sons, but only one survived him. This son, Louis the Pious, followed his father as the ruler of a united empire. But sole inheritance remained a matter of chance, rather than intent. When Louis died in 840, the Carolingians adhered to the custom of partible inheritance, and after a brief civil war between the three grandsons, they made an agreement in 843, the Treaty of Verdun, which divided the empire in three:
Subsequently, at the Treaty of Mersen (870) the partitions were recast, to the detriment of Lotharingia. On 12 December 884, Charles the Fat reunited most of the Carolingian Empire, aside from Burgundy. In late 887, his nephew, Arnulf of Carinthia revolted and assumed the title as King of the East Franks. Charles retired and soon died on 13 January 888. Odo, Count of Paris was chosen to rule in the west, and was crowned the next month. At this point, West Francia was composed of Neustria in the west and in the east by Francia proper, the region between the Meuse and the Seine. The Carolingians were restored ten years later in West Francia, and ruled until 987, when the last Frankish King, Louis V, died.
West Francia was the land under the control of Charles the Bald. It is the precursor of modern France. It was divided into the following great fiefs: Aquitaine, Brittany, Burgundy, Catalonia, Flanders, Gascony, Gothia, the Île-de-France, and Toulouse. After 987, the kingdom came to be known as France, because the new ruling dynasty (the Capetians) were originally dukes of the Île-de-France.
Middle Francia was the territory ruled by Lothair I, wedged between East and West Francia. The kingdom, which included the Kingdom of Italy, Burgundy, the Provence, and the west of Austrasia, was an unnatural creation of the Treaty of Verdun, with no historical or ethnic identity. The kingdom was split on the death of Lothair II in 869 into those of Lotharingia, Provence (with Burgundy divided between it and Lotharingia), and north Italy.
East Francia was the land of Louis the German. It was divided into four duchies: Swabia (Alamannia), Franconia, Saxony and Bavaria (including Moravia and Carinthia); to which after the death of Lothair II were added the eastern parts of Lotharingia. This division persisted until 1268, the end of the Hohenstaufen dynasty. Otto I was crowned on 2 February 962, marking the beginning of the Holy Roman Empire (translatio imperii). From the 10th century, East Francia became also known as regnum Teutonicum ("Teutonic kingdom" or "Kingdom of Germany"), a term that became prevalent in Salian times. The title of Holy Roman Emperor was used from that time, beginning with Conrad II.
The different Frankish tribes, such as the Salii, Ripuarii, and Chamavi, had different legal traditions, which were only lately codified, largely under Charlemagne. The Leges Salica, Ribuaria, and Chamavorum were Carolingian creations, their basis in earlier Frankish reality being difficult for scholars to discern at the present distance. Under Charlemagne codifications were also made of the Saxon law and the Frisian law. It was also under Frankish hegemony that the other Germanic societies east of the Rhine began to codify their tribal law, in such compilations as the Lex Alamannorum and Lex Bajuvariorum for the Alemanni and Bavarii respectively. Throughout the Frankish kingdoms there continued to be Gallo-Romans subject to Roman law and clergy subject to canon law. After the Frankish conquest of Septimania and Catalonia, those regions which had formerly been under Gothic control continued to utilise the Visigothic law code.
During the early period Frankish law was preserved by the rachimburgs, officials trained to remember it and pass it on. The Merovingians adopted the capitulary as a tool for the promulgation and preservation of royal ordinances. Its usage was to continue under the Carolingians and even the later Spoletan emperors Guy and Lambert under a programme of renovation regni Francorum ("renewal of the Frankish kingdom").
The last Merovingian capitulary was one of the most significant: the edict of Paris, issued by Chlothar II in 614 in the presence of his magnates, had been likened to a Frankish Magna Carta entrenching the rights of the nobility, but in actuality it sought to remove corruption from the judiciary and protect local and regional interests. Even after the last Merovingian capitulary, kings of the dynasty continued to independently exercise some legal powers. Childebert III even found cases against the powerful Arnulfings and became renowned among the people for his justness. But law in Francia was to experience a renaissance under the Carolingians.
Among the legal reforms adopted by Charlemagne were the codifications of traditional law mentioned above. He also sought to place checks on the power of local and regional judiciaries by the method of appointing missi dominici in pairs to oversee specific regions for short periods of time. Usually missi were selected from outside their respective regions in order to prevent conflicts of interest. A capitulary of 802 gives insight into their duties. They were to execute justice, enforce respect for the royal rights, control the administration of the counts (then royal appointees), receive the oath of allegiance, and supervise the clergy.
The most dramatic change in medieval Gaul was the collapse of trade and town life. While many "towns" existed in the Dark Ages, they were usually only the fortified villages or market-centers surrounding government or religious buildings; many of these towns were, however, descended from Roman cities. Some foreign trade continued, but it was carried out by foreigners, chiefly Greeks, Syrians, Jews, and (eventually) Vikings and Italians. There were, however, improvements in agriculture, notably the adoption of a new heavy plough and the growing use of the three-field system.
Byzantine coinage was in use in Francia before Theudebert I began minting his own money at the start of his reign. The solidus and triens were minted in Francia between 534 and 679. The denarius (or denier) appeared later, in the name of Childeric II and various non-royals around 673–675. A Carolingian denarius replaced the Merovingian one, and the Frisian penning, in Gaul from 755 to the eleventh century.
The denarius subsequently appeared in Italy issued in the name of Carolingian monarchs after 794, later by so-called "native" kings in the tenth century, and later still by the German Emperors from Otto I (962). Finally, denarii were issued in Rome in the names of pope and emperor from Leo III and Charlemagne onwards to the late tenth century.