In November 1095, Pope Urban II's call for holy war launched the First Crusade. The IB syllabus asks you to weigh religious and secular (non-religious) motives together.
The starting point
- Urban II stood before a huge crowd at the Council of Clermont in France
- He called for a holy war to take Jerusalem back from Muslim rule
- No single cause explains why so many people answered the call
- Religious and secular motives were tangled up in the minds of the people who went
- The holy places — Jerusalem, Bethlehem and Nazareth held huge religious meaning for Christians as the sites of Christ's life and death; losing access to them felt like a spiritual crisis.
- Pilgrimage and preaching — for centuries Christians had travelled to Jerusalem as pilgrims; preachers like Urban II reframed an armed journey there as an act of penance that could forgive sins.
- Byzantine appeal for help — in 1095 the Byzantine Emperor Alexios I Komnenos asked the Pope for soldiers to fight the Seljuk Turks, who had taken most of Anatolia after defeating the Byzantines at Manzikert (1071).
- Papal power and unity — Urban II saw a crusade as a way to boost his own authority, unite quarrelling European knights behind a single cause, and heal the 1054 split between the Catholic and Orthodox Churches.
- Secular motives — younger sons with no land to inherit, knights seeking adventure, wealth, titles or trade opportunities, and Italian merchant cities (Genoa, Pisa, Venice) wanting Mediterranean trade routes all had non-religious reasons to join or fund a crusade.
Theory and practice of jihad: On the Muslim side, jihad was, in theory, a religious duty to defend or expand Muslim territory. In practice, the Islamic world in 1095 was deeply divided.
A divided Islamic world
- Sunni Seljuk Turks, the Shia Fatimid Caliphate in Egypt, and rival local rulers were often more focused on fighting each other than on jihad against the crusaders
- This disunity is a key reason the First Crusade succeeded
For Paper 3, always present these causes as connected, not separate boxes: religious devotion gave the crusade its moral force and mass appeal, while political rivalry, economic ambition and Byzantine weakness gave it its opportunity and its army.
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The First Crusade was the only crusade that achieved its main goal.
The army of 1096
- An army of perhaps 60,000-100,000 people set out in 1096
- It was led by nobles rather than kings
- Key leaders included Godfrey de Bouillon, Duke of Lower Lorraine, alongside Raymond of Toulouse and Bohemond of Taranto
1097 - Nicaea and Dorylaeum
The crusaders, helped by Byzantine forces, captured Nicaea from the Seljuks, then won the Battle of Dorylaeum, opening the road across Anatolia.
1098 - Siege of Antioch
After an eight-month siege, the crusaders took Antioch through betrayal from inside the city, then survived being besieged themselves by a relief army.
1099 - Siege and fall of Jerusalem
After a five-week siege, the crusaders stormed Jerusalem in July 1099 and massacred much of the population, both Muslim and Jewish.
1099 - Godfrey de Bouillon made ruler
Godfrey de Bouillon became the first ruler of Jerusalem, taking the modest title 'Defender of the Holy Sepulchre' rather than king.
Nicaea opens the road, Antioch nearly breaks them, Jerusalem is the prize.
Why did the First Crusade succeed?: Muslim disunity (Sunni-Shia rivalry, squabbling local emirs), Byzantine and Armenian support along the route, crusader battlefield discipline (the tight infantry-cavalry formation), and sheer religious motivation combined to give a relatively small, exhausted army victory over larger but divided opponents.
The First Crusade's success created four new Christian states in the Middle East — you will meet these as the crusader states later in this topic. Its brutality, especially the 1099 massacre in Jerusalem, also poisoned relations with the Muslim world for the rest of the period.
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Foundation of the crusader states
Victory in 1099 let the crusaders carve out four crusader states, also called the Latin East, ruled by Western European nobles far from home and dependent on reinforcements and trade by sea.
| Crusader state | Founded | Founder / first ruler |
|---|---|---|
| County of Edessa | 1098 | Baldwin of Boulogne (first state founded) |
| Principality of Antioch | 1098 | Bohemond of Taranto |
| Kingdom of Jerusalem | 1099 | Godfrey de Bouillon |
| County of Tripoli | 1109 | Completed after Raymond of Toulouse's death |
Edessa first, Tripoli last: Edessa was the first crusader state founded (1098) and the first to fall (1144) — that fall directly triggered the Second Crusade. Tripoli was the last of the four to be completed (1109).
The Second Crusade, 1145-1149
- Cause — the Muslim commander Nur al-Din captured Edessa in 1144, ending the first crusader state and shocking Christian Europe.
- Response — Pope Eugenius III called a new crusade; King Louis VII of France and Emperor Conrad III of Germany led separate armies east from 1147.
- Extent of success — very limited: both royal armies were badly mauled crossing Anatolia, and a badly planned attack on Damascus in 1148 failed within days, achieving nothing.
- Consequences — Muslim confidence and unity grew under Nur al-Din, who used the crusaders' failure to present himself as the leading defender of Islam and to extend his own power over Damascus.
Compare, don't just list: A common Paper 3 command term is 'compare and contrast' two crusades. For the First versus Second Crusade, the sharpest contrast is leadership and unity: the First Crusade was led by determined regional nobles with clear local goals; the Second was led by rival kings with poor coordination, which explains the very different outcomes.