Otto I, Holy Roman Emperor in the context of "Duchy of Tridentum"

The Duchy of Bohemia, also later referred to in English as the Czech Duchy, (Old Czech: Češské kniežěstvie) was a monarchy and a principality of the Holy Roman Empire in Central Europe during the Early and High Middle Ages. It was formed around 870 by Czechs as part of the Great Moravian realm. Bohemia separated from disintegrating Great Moravia after Duke Spytihněv swore fealty to the East Frankish king Arnulf in 895.

While the Bohemian dukes of the Přemyslid dynasty, at first ruling at Prague Castle and Levý Hradec, brought further estates under their control, the Christianization initiated by Saints Cyril and Methodius was continued by the Frankish bishops of Regensburg and Passau. In 973, the Diocese of Prague was founded through the joint efforts of Duke Boleslaus II and Emperor Otto I. Later Duke Wenceslaus I of Bohemia, killed by his younger brother Boleslaus in September 935, became the land's patron saint.

Hugh Capet (/ˈkæpeɪ/; French: Hugues Capet [yɡ kapɛ]; c. 941 – 24 October 996) was the King of the Franks from 987 to 996. He is the founder of and first king from the House of Capet. The son of the powerful duke Hugh the Great and his wife Hedwige of Saxony, he was elected as the successor of the last Carolingian king, Louis V. Hugh was descended from Charlemagne's son Pepin of Italy through his paternal grandmother Béatrice of Vermandois, and was also a nephew of Otto the Great.

The dynasty he founded ruled France for nearly nine centuries: from 987 to 1328 in the senior line, and until 1848 via cadet branches (with an interruption from 1792 to 1814 and briefly in 1815).

The Ottonian Renaissance was a renaissance of Byzantine and Late Antique art in Central and Southern Europe that accompanied the reigns of the first three Holy Roman Emperors of the Ottonian (or Saxon) dynasty: Otto I (936–973), Otto II (973–983), and Otto III (983–1002), and which in large part depended upon their patronage. The leading figures in this movement were Pope Sylvester II and Abbo of Fleury. Renewed contact between the Ottonian court and Byzantine Constantinople spurred the hybridisation of Eastern-Byzantine and Western-Latin cultures, particularly in arts, architecture and metalwork, while the Ottonians revitalised the cathedral school network which promoted learning based on the seven liberal arts. Ottonian intellectual activity was largely a continuation of Carolingian works, but circulated mainly in the cathedral schools and the courts of bishops (such as Liège, Cologne and Magdeburg), rather than the royal court.

The March of Verona and Aquileia was a vast march (frontier district) of the Holy Roman Empire in the northeastern Italian region during the Middle Ages, centered on the cities of Verona and Aquileia. Seized by King Otto I of Germany in 952, it was held by the Dukes of Bavaria; from 976 in personal union with the Duchy of Carinthia. The margravial regime ended with the advent of the Lombard League in 1167.

Magdeburg (/ˈmæɡdəbɜːrɡ/ MAG-də-burg, German: [ˈmakdəbʊʁk] , locally [ˈmaχdəbʊɐ̯ç]; Low Saxon: Meideborg [ˈmaˑɪ̯debɔɐ̯x]) is the capital of the German state of Saxony-Anhalt. The city is on the Elbe river.

Otto I, the Holy Roman Emperor and the founder of the Archbishopric of Magdeburg, was buried in the city's cathedral after his death. Magdeburg's version of German town law, known as Magdeburg rights, spread throughout Central and Eastern Europe. In the Late Middle Ages, Magdeburg was one of the largest and most prosperous German cities and a notable member of the Hanseatic League. One of the most notable people from the city was Otto von Guericke, famous for his experiments with the Magdeburg hemispheres.

Magdeburg rights (German: Magdeburger Recht, Polish: Prawo magdeburskie, Lithuanian: Magdeburgo teisė; also called Magdeburg law) were a set of town privileges first developed by Otto I, Holy Roman Emperor (936–973), which regulated the degree of internal autonomy within cities and villages granted by the local ruler. Named after the city of Magdeburg and based on Roman municipal and universal merchant traditions, these town charters were perhaps the most important set of medieval laws in Central Europe. They became the basis for the German town laws developed during many centuries in the Holy Roman Empire. The Magdeburg rights were adopted and adapted by numerous monarchs, including the rulers of Bohemia, Hungary, Poland, and Lithuania, a milestone in the urbanization of the region which prompted the development of thousands of villages and cities.

The Bishopric of Merseburg was an episcopal see on the eastern border of the medieval Duchy of Saxony with its centre in Merseburg, where Merseburg Cathedral was constructed. The see was founded in 967 by Emperor Otto I at the same time in the same manner as those of Meissen and Zeitz (from 1029: Naumburg), all suffragan dioceses of the Archbishopric of Magdeburg as part of a plan to bind the adjacent Slavic ("Wendish") lands in the Saxon Eastern March beyond the Saale River more closely to the Holy Roman Empire.

The prince-bishopric was re-established by King Henry II of Germany in 1004. It then covered a considerable small territory stretching from the Saale up to the Mulde River and the Margraviate of Meissen in the east.

The history of the papacy from 1046 to 1216 was marked by conflict between popes and the Holy Roman Emperor, most prominently the Investiture Controversy, a dispute over who— pope or emperor— could appoint bishops within the Empire. Henry IV's Walk to Canossa in 1077 to meet Pope Gregory VII (1073–85), although not dispositive within the context of the larger dispute, has become legendary. Although the emperor renounced any right to lay investiture in the Concordat of Worms (1122), the issue would flare up again.

The Imperial crown once held by the Carolingian emperors was disputed between their fractured heirs and local overlords; none emerged victorious until Otto I, Holy Roman Emperor invaded Italy. Large parts of northern and central Italy became a constituent kingdom of the Holy Roman Empire in 962, from which point emperors were Germanic. As emperors consolidated their position, northern Italian city-states would become divided by Guelphs and Ghibellines.

Deventer (Dutch: [ˈdeːvəntər] ; Sallands: Daeventer) is a city and municipality in the Salland historical region of the province of Overijssel, Netherlands. In 2020 the municipality of Deventer had a population of 100,913. The city is largely situated on the east bank of the river IJssel, but it also has a small part of its territory on the west bank. In 2005 the municipality of Bathmen (with a population of about 5,000 people) was merged with Deventer as part of a national effort to reduce bureaucracy in the country.

Deventer is one of the oldest cities in the Netherlands. The place is mentioned in 9th-century sources from the Diocese of Utrecht. A charter from 877 AD mentions seven farmsteads in Daventre portu (the Deventer harbor). In 952 AD, Deventer is mentioned as a city in a gift certificate from King Otto I. After the place had acquired more and more rights and privileges over time, it received the municipal lands from Emperor Henry V in 1123. This is considered by historians to be the moment of Deventer obtaining the city rights by the inhabitants. The city has the oldest stone house, the oldest walking park and with the Athenaeum library also the oldest scientific library in the Netherlands.