Charles Martel
688-741
Charles Martel was a powerful Frankish leader who ruled as Mayor of the Palace, effectively controlling the kingdom while Merovingian kings held only the title. He reunited Frankish lands through warfare and diplomacy, building a strong professional army funded by church lands. Martel promoted the use of cavalry and rewarded loyal followers with estates, planting seeds for the feudal system. His leadership preserved Frankish independence and elevated his Carolingian family. By stopping external threats and strengthening internal rule, he paved the way for his son Pepin to become king and grandson Charlemagne to create a vast empire.
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Portrait of Charles Martel from the 1553 French book Promptuarii Iconum Insigniorum, showing the early medieval Frankish ruler.
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Pepin the Short
714-768
Pepin the Short, son of Charles Martel, became Mayor of the Palace and continued strengthening Carolingian rule. In 751, with approval from Pope Zachary, he deposed the last Merovingian king and was crowned King of the Franks, formally founding the Carolingian dynasty. To repay papal support, he twice campaigned against the Lombards in Italy and donated conquered territories to the Pope in 754–756, creating the Papal States. This alliance shifted power away from Byzantium and set a precedent for future coronations. Pepin's reforms improved administration and military organization, preparing the way for his son Charlemagne.
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Portrait image of Pepin the Short (Pépin le Bref), a 15th‑century depiction of the Frankish king who reigned 751–768.
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Arab Siege of Constantinople
717-718
A massive Arab army and navy under Maslama ibn Abd al-Malik besieged Constantinople, aiming to conquer the Byzantine capital. Emperor Leo III skillfully defended the city using Greek fire to destroy Arab ships and Bulgarian allies for support. The attackers suffered from harsh winter, disease, and supply shortages. Crucially, the formidable Theodosian Walls—multi-layered fortifications with moats, towers, and double walls—proved impenetrable, repelling all assaults and exhausting the besiegers. The Arabs lifted the siege in defeat, marking a turning point that halted Islamic expansion into Europe and preserved the Byzantine Empire for centuries.
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Photograph of a restored section of the Walls of Constantinople in Istanbul, Turkey, showing the historic defensive fortification.
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Battle of Tours
732
Near Tours in modern France, Charles Martel led a Frankish army against a large Muslim force from al-Andalus under Governor Abd al-Rahman. After days of skirmishing, the Franks launched a fierce counterattack that shattered the invaders' lines and killed their leader. The Muslim army withdrew southward, ending major raids into Western Europe. This victory halted Islamic expansion beyond the Pyrenees, securing Christian dominance in Francia. It boosted Martel's prestige, strengthened Carolingian power, and is seen as a turning point that helped shape Europe's religious and cultural future.
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Illuminated miniature of Charles Martel fighting the Saracens at Tours‑Poitiers (732) from the Grandes Chroniques de France.
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Hagia Irene
740
Hagia Irene, in Istanbul's Topkapı Palace courtyard, is one of the oldest Byzantine churches, originally built in the 4th century by Constantine and rebuilt as a domed basilica by Justinian I in 548 after fire damage. Severely affected by the 740 earthquake, it was restored in the 8th century during Iconoclasm. Never converted to a mosque after the Ottoman conquest, it uniquely preserves original Byzantine interior elements. It exemplifies early domed basilica design with a vast atrium and synthronon, influencing later churches. Its survival offers rare insight into Byzantine religious shifts and uninterrupted Christian architecture.
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Photo of the Church of St. Irene (Hagia Eirene) in Istanbul showing its roof and upper structure from the northwest.
Brixworth All Saints' Church
800
All Saints' Church in Brixworth, Northamptonshire, is the largest surviving Anglo-Saxon church in England and a premier example of early medieval architecture. Built around 680–800 AD on a former Roman site, it reused Roman bricks in a basilica plan with square piers, a nave, ambulatory, and rare stair turret. Its substantial original fabric, including arched openings and pilaster strips, bridges Roman and later styles. As a Grade I listed building in continuous use for over 1,300 years, it offers vital insight into Anglo-Saxon craftsmanship and Christian continuity in post-Roman Britain.
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Exterior of All Saints’ Church, Brixworth, an early Anglo-Saxon stone church in England, notable for its 7th-century Roman-influenced architecture.
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Astrolabe
700s
The astrolabe entered a transformative phase in the Islamic world during the early Abbasid era. Ancient Greek designs reached Muslim scholars, and mathematician Muhammad al-Fazari constructed the first known Islamic astrolabe, refining it with angular scales and improved precision. This brass instrument measured celestial altitudes, told time, and located the Qibla for prayer. Its historical importance lies in advancing astronomy, navigation, and surveying, preserving classical knowledge while fueling the Islamic Golden Age's scientific boom. Later transmitted to Europe, it enabled exploration and symbolized medieval intellectual exchange.
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Title page of Elucidatio fabricae usuque astrolabii (1524), a Renaissance treatise on designing and using the astrolabe by Johannes Stöffler.
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Paper Productions
751-793
Chinese papermaking technology spread westward to the Islamic world, traditionally linked to the Battle of Talas (751), where captured Chinese artisans reportedly introduced techniques to Samarkand. Mills soon appeared in Baghdad (793), using linen rags and water power for mass production. This cheaper, durable alternative to papyrus and parchment revolutionized administration, scholarship, and bookmaking in the Abbasid Caliphate. It fueled the Islamic Golden Age by enabling widespread copying of texts, preserving knowledge, and boosting literacy. Later reaching Europe, paper transformed global communication, science, and culture.
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Watercolor showing the traditional Oriental paper-making process, illustrating stages of historic papermaking from the 19th century.
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