Difficulty: Intermediate | Prerequisites: Chapter 2 (Classical Civilisations, especially the fall of Rome and the Great Schism)
Big picture: This chapter covers the period between the fall of Rome and the Renaissance, roughly 400–1400 CE. It traces the origins and expansion of Islam, the feudal system in Europe, the Dark Ages, the Crusades, the Byzantine Empire under Justinian, the plague, and the Inquisition. This is the "middle" of world history, and it explains how Europe went from the collapse of Roman order to the conditions that eventually sparked the Renaissance. You need to understand Rome's fall and the Christian schism from Chapter 2 before this makes full sense.
After Rome fell, Europe entered the Dark Ages: little development, no centralised learning, and feudalism as the organising system. Meanwhile, Islam emerged in the Middle East and expanded rapidly. The Byzantine Empire preserved Greco-Roman culture in the East. Plague devastated populations. The Crusades brought violent conflict but also cultural exchange between Europe and the Islamic world.
Sharia
Islamic law, described as "God's immutable divine law." It forms the legal framework of Islamic societies, drawn from the Quran and Hadiths. Think of it as the Islamic equivalent of a constitution rooted in religious scripture.
Abbasid Caliphate
The Islamic golden age dynasty (8th–13th century), which moved the capital to Baghdad, built the House of Wisdom, and fostered intellectual exchange. In simple terms, this was the period when the Islamic world was the global centre of learning.
Feudalism
A political and social system based on land control, rights, and obligations. Status was determined by your relationship to land: kings granted land to barons, who granted it to knights, and so on down to serfs. Think of it as a pyramid of loyalty-for-land exchanges.
Manor
A lord's estate, where peasants lived and worked. Peasants paid high taxes, worked fields and crops, lived in cottages, and could die of malnutrition. The manor was the basic economic unit of feudal Europe.
Magna Carta (15 June 1215)
An agreement between King John and the barons that limited the powers of the king and gave rights to the barons. It came in 4 versions. Think of it as the first formal check on royal power in England.
Justinian (527–565 CE)
Byzantine emperor who wanted to reunite the Roman Empire. He built Hagia Sophia, created the Code of Justinian (5,000 laws in 50 volumes, a uniform legal code), rebuilt Constantinople, and built churches. His reign represented the peak of Byzantine power.
Code of Justinian
A uniform legal code of 5,000 laws in 50 volumes, consolidating Roman law. It represented Greco-Roman culture and became the foundation for many later European legal systems.
Black Death (1347–1351)
A devastating plague that came to Europe from Asia, caused by improper sanitary conditions. It wiped out roughly one-third of Europe's population. People (hosts) were weak from poor nutrition and crowded conditions.
Yersinia pestis
The bacterium that caused the plague, transmitted by fleas on rodents. Highly contagious.
Crusades
A series of four military campaigns launched by European Christians to reclaim the Holy Land from Muslim control. They started as "pilgrimages" and evolved into full military expeditions.
Great Schism (1054)
The formal split of Christianity into Roman Catholicism (West) and Eastern Orthodoxy (East). This was the culmination of centuries of tension between the Byzantine and Roman churches.
Inquisition
A Catholic institution designed to root out non-Catholics (heresy). Accused people were tested; if they did not confess, they were burned. Pope John X oversaw it, and jobs were created for inquisitors.
World religion founders: Moses (father of Judaism), Jesus (33 CE), Muhammad (beginning of Muslim culture), Abraham (Judaism starts)
Basics of Judaism: religion of Abraham and the Hebrews, based on the teachings of Moses, Solomon built the First Temple, David united the 12 tribes of Israel
Tanakh: the Jewish Bible
Torah: the first 5 books of Moses, the Old Testament
Muhammad (570 CE) received revelations from God, preached through the Quran, Arabian Peninsula became Islamic, created caliphates
Sharia: "God's immutable divine law," the legal framework drawn from the Quran and Hadiths
Abbasid Caliphate (8th–13th century): golden age of Islam, began in Damascus, moved capital to Baghdad, House of Wisdom, intellectual exchange
Dome of the Rock: oldest Islamic monument, highest point of Israel, located on the rock where Abraham was tested
Muhammad's successors spread Islam; Muslims elected Abu-Bakr (died 634) as the first caliph
Quran served as leadership guide; rightly guided caliphs led the caliphates
Invoked jihad (striving/struggle vs. evil)
Umar: second caliph, conquered Syria, conquered other empires when they were weak; Byzantine Empire welcomed Islam and let people keep their own beliefs
Internal conflict: Muslims had difficulty maintaining unified rule; Umayyads came to power and moved the capital to Damascus
Early Middle Ages: fall of the Roman Empire, first plague, expansion of Islam
High Middle Ages: rise of feudalism, Crusades, Magna Carta, Catholic Inquisition
Late Middle Ages: Black Death, Joan of Arc died, Hundred Years' War, ended with the Renaissance
The Dark Ages are characterised by no development, no learning, and a loss of Roman and Greek knowledge
Feudal hierarchy (top to bottom):
King: "granted power by God"
Barons/Nobles: granted land by king, had manors, paid taxes, owed debts and loyalty to king, granted fief (land) to vassals
Knights/Vassals: leased land from barons, gave military time, protected the baron's family
Burghers: leased land, provided service and toll
Peasants/Serfs: no rights, had to get permission, were servants, owned nothing
The feudal system was a rigid pyramid: king at the top, then barons, knights, burghers, and serfs at the bottom
Movement between classes was essentially impossible
4 versions of the document
Agreement between King John and the barons
Limited the powers of the king
Gave rights to the barons
A foundational document in the history of limiting government power
Invaders who attacked Western Europe:
Vikings: Germanic, warlike gods, longboats, fast and agile
Magyars: nomads from Hungary, horsemen, invaded England (~900), captives were sold as slaves
Muslims: invaded Italy and Spain (600–700s), wanted to settle in Europe
Feudalism emerged during these attacks: a system of rights and obligations, dependent on land control, where status determined power
Manors: a lord's estate; peasants lived in the manor lands, paid high taxes, worked fields and crops, lived in cottages, and could die of malnutrition
Inquisition: designed to root out non-Catholics; Pope John X; inquisitors as a job; people could admit to heresy; if accused, they were tested; if they did not confess, they were burned
Inquisition in Spain (1478): Spain's own version; Jews and Muslims had to leave or convert; forced conversion; lasted until 1834 (about 360 years)
Plague 101: caused by Yersinia pestis, spread by fleas and rodents, highly contagious
Causes of spread: international trade, more urban populations, lack of medical knowledge
Age of Justinian (527–565): Byzantine emperor, wanted to unite Rome again (East and West), built Hagia Sophia (later became an Islamic mosque), weakened by plague
Plague of Justinian: hit the Byzantine Empire (specifically Egypt), wiped out half the population, named after the emperor
Black Death (1347–1351): came from Asia, improper sanitary conditions, wiped out roughly 1/3 of Europe's population, hosts (people) were weak
A "new Rome" based in Constantinople
Divided into Western and Eastern halves (345 CE)
Justinian came into power (527), wanted to restore glory, won Italy and parts of Spain
Life in New Rome: spoke more Greek than Latin, Code of Justinian (5,000 laws, 50 volumes, uniform code), rebuilt Constantinople, built churches, represented Greco-Roman culture
The Empire Falls: Justinian Plague, attacks from East and West, the Great Schism
Great Schism (1054): split Christianity into Catholic (West) and Orthodox (East)
The Crusades (4 total):
Goal: reclaim the Holy Land; started as "pilgrimages"
First Crusade: army of believer-peasants
Second Crusade: King Louis of France, defeated at Damascus
Third Crusade: captured Constantinople, against Muslims, aimed "to unify Christians"
Aftermath: Knights Templar (created a banking system), charity, further exchange of knowledge, but also Muslim backlash
Students often treat the "Dark Ages" as a period where nothing happened anywhere. The Islamic world was in its golden age during this same period, producing major advances in mathematics, science, and philosophy. "Dark" refers specifically to Western Europe.
The Crusades are sometimes presented as purely religious. They were also driven by political ambition, economic interests (trade routes), and the desire for land.
Feudalism was not identical across all of Europe. The basic structure (king, barons, knights, serfs) was widespread, but local variations were significant.
The Magna Carta did not establish democracy. It limited the king's power relative to the barons, not relative to common people.
⚠️ Know the feudal hierarchy in order: King, Barons/Nobles, Knights/Vassals, Burghers, Peasants/Serfs.
⚠️ Be able to explain what the Magna Carta did and did not do: it limited royal power and gave rights to barons, not to common people.
⚠️ Know the difference between the Plague of Justinian (6th century, Byzantine Empire) and the Black Death (14th century, all of Europe).
⚠️ Understand the Great Schism (1054): Catholic vs. Orthodox, West vs. East.
⚠️ The Crusades: know all four, their outcomes, and the aftermath (Knights Templar, banking, cultural exchange, Muslim backlash).
True or False: The Abbasid Caliphate's capital was in Damascus.
Fill in the blank: The feudal system was based on control of __________.
True or False: The Magna Carta gave rights to common people.
Fill in the blank: The Black Death wiped out roughly __________ of Europe's population.
True or False: The Great Schism split Christianity into Catholic and Protestant branches.
Answers: 1. False (it moved the capital to Baghdad; it began in Damascus). 2. Land. 3. False (it gave rights to barons, not common people). 4. One-third. 5. False (it split into Catholic and Eastern Orthodox; the Protestant split came later with the Reformation).
Q: What was the feudal hierarchy, from top to bottom?
A: King (power granted by God), Barons/Nobles (granted land by king), Knights/Vassals (leased land from barons, gave military service), Burghers (leased land, provided service/toll), Peasants/Serfs (no rights, owned nothing).
Q: What caused the rapid spread of the Black Death?
A: International trade routes, increasingly urban populations, and a lack of medical knowledge. The bacterium Yersinia pestis was carried by fleas on rodents.
Q: How did the Crusades affect Europe and the Islamic world?
A: The Crusades brought violent conflict but also cultural and intellectual exchange. The Knights Templar established an early banking system. Further exchange of knowledge occurred between the two civilisations. The Islamic world experienced backlash against European incursion.
Q: What was Justinian's lasting contribution to law?
A: The Code of Justinian, a uniform legal code containing 5,000 laws in 50 volumes, which consolidated Roman legal traditions and became a foundation for later European legal systems.
Q: What was the significance of the Magna Carta?
A: Signed on 15 June 1215, it was an agreement between King John and the barons that formally limited royal power and granted rights to the baronial class. It is considered an early step in the long history of constraining government authority.
The Dark Ages' lack of learning and development sets up the Renaissance (Chapter 4), which is defined by the rediscovery of classical knowledge.
The Crusades' exchange of knowledge, especially from the Islamic world's golden age, helped spark intellectual revival in Europe.
The Great Schism connects backward to the rise of Christianity in Chapter 2 and forward to the Protestant Reformation in Chapter 4.
Islam, Muhammad, Quran, Sharia, caliphate, Abbasid, Baghdad, House of Wisdom, Dome of the Rock, jihad, Umar, Umayyad, Dark Ages, medieval, feudalism, feudal hierarchy, manor, serf, peasant, knight, vassal, baron, king, Magna Carta, King John, Viking, Magyar, Inquisition, Reconquista, heresy, Yersinia pestis, Black Death, plague, Plague of Justinian, Byzantine Empire, Justinian, Code of Justinian, Hagia Sophia, Constantinople, Great Schism, Catholic, Eastern Orthodox, Crusades, First Crusade, Second Crusade, Third Crusade, Knights Templar, Holy Land, pilgrimages