The Crusades were a series of religiously sanctioned military campaigns, waged by much of Roman Catholic Europe, particularly the Franks of France and the Holy Roman Empire. The specific crusades to restore Christian control of the Holy Land were fought over a period of nearly 200 years, between 1095 and 1291. Other campaigns in Spain and Eastern Europe continued into the 15th century. The Crusades were fought mainly by Roman Catholic forces (taking place after the East–West Schism and mostly before the Protestant Reformation) against Muslims who had occupied the near east since the time of the Rashidun Caliphate, although campaigns were also waged against pagan Slavs, pagan Balts, Jews, Russian and Greek Orthodox Christians, Mongols, Cathars, Hussites, Waldensians, Old Prussians, and political enemies of the various popes.[1] Orthodox Christians also took part in fighting against Islamic forces in some Crusades. Crusaders took vows and were granted a plenary indulgence.[1][2]
The Crusades originally had the goal of recapturing Jerusalem and the Holy Land from Muslim rule and their campaigns were launched in response to a call from the Christian Byzantine Empire for help against the expansion of the Muslim Seljuk Turks into Anatolia. The term is also used to describe contemporaneous and subsequent campaigns conducted through to the 16th century in territories outside the Levant[3] usually against pagans, heretics, and peoples under the ban of excommunication[4] for a mixture of religious, economic, and political reasons.[5] Rivalries among both Christian and Muslim powers led also to alliances between religious factions against their opponents, such as the Christian alliance with the Sultanate of Rûm during the Fifth Crusade.
The Crusades had far-reaching political, economic, and social impacts, some of which have lasted into contemporary times. Because of internal conflicts among Christian kingdoms and political powers, some of the crusade expeditions were diverted from their original aim, such as the Fourth Crusade, which resulted in the sack of Christian Constantinople and the partition of the Byzantine Empire between Venice and the Crusaders. The Sixth Crusade was the first crusade to set sail without the official blessing of the Pope.[6] The Seventh, Eighth and Ninth Crusades resulted in Mamluk and Hafsid victories, as the Ninth Crusade marked the end of the Crusades in the Middle East.
Middle Eastern situation
The Holy Land is significant in Christianity because of the land's association as the place of nativity, ministry, crucifixion and resurrection of Jesus, whom Christians regard as the Saviour or Messiah. By the end of the 4th century, following the Roman Emperor Constantine's conversion to Christianity (313) and later the founding of the Byzantine Empire after the partition of the Roman Empire, the Holy Land had become a predominantly Christian region.[8][9] Churches commemorating various events in the life of Jesus had been erected at key sites.
Jerusalem in particular holds a significance in Islam as it holds it to be the site of the ascension into heaven of the prophet Muhammad whom Muslims believe to be the foremost prophet of Allah and Jerusalem is often regarded as the third most sacred site in Islam. The Muslim presence in the Holy Land began with the initial Muslim conquest of Syria in the 7th century under the Rashidun Caliphs. The Muslim armies' successes put increasing pressure on the Eastern Orthodox Byzantine Empire which had originally claimed the region (part of the Eastern Roman Empire which the Byzantines inherited) as their territory – this included eventual incursions by the Seljuk Turks. Jerusalem also holds historical and religious importance for Jews as it is the site of the Western Wall, the last remaining piece of the Second Temple. Jews consider Israel as their ancestral homeland, and had been visiting the city since its destruction in 70 CE[10] and its occupation in AD 136. Another factor that contributed to the change in Western attitudes towards the East came in the year 1009, when the Fatimid Caliph al-Hakim bi-Amr Allah ordered the destruction of the Church of the Holy Sepulchre. In 1039 his successor, after requiring large sums be paid for the right, permitted the Byzantine Empire to rebuild it.[11] Pilgrimages were allowed to the Holy Lands before and after the Sepulchre was rebuilt. The Muslims eventually realized that much of the wealth of Jerusalem came from the pilgrims; for this reason and others, the persecution of pilgrims eventually stopped.[12] However, the damage was already done, and the violence of the Seljuk Turks became part of the concern that spread support for the Crusades across the Christian world.[13]
Western European situation
The origins of the Crusades lie in developments in Western Europe earlier in the Middle Ages, as well as the deteriorating situation of the Byzantine Empire in the east caused by a new wave of Turkish Muslim attacks. The breakdown of the Carolingian Empire in the late 9th century, combined with the relative stabilization of local European borders after the Christianization of the Vikings, Slavs, and Magyars, had produced a large class of armed warriors whose energies were misplaced fighting one another and terrorizing the local populace. The Church tried to stem this violence with the Peace and Truce of God movements, which was somewhat successful, but trained warriors always sought an outlet for their skills, and opportunities for territorial expansion were becoming less attractive for large segments of the nobility.
Map of the Iberian Peninsula at the time of the Almoravid arrival in the 11th century– Christian Kingdoms included Aragón, Castile, Leon, Navarre, and Portugal
In 1063, Pope Alexander II had given his blessing to Iberian Christians in their wars against the Muslims, granting both a papal standard (the vexillum sancti Petri) and an indulgence to those who were killed in battle. Pleas from the Byzantine Emperors, now threatened by the Seljuks, thus fell on ready ears. These occurred in 1074, from Emperor Michael VII to Pope Gregory VII and in 1095, from Emperor Alexios I Komnenos to Pope Urban II. One source identifies Michael VII in Chinese records as a ruler of Byzantium (Fulin) who sent an envoy to Song Dynasty China in 1081.[14][15] A Chinese scholar suggests that this and further Byzantine envoys in 1091 were pleas for China to aid in the fight against the Turks.[16]
The Crusades were, in part, an outlet for an intense religious piety which rose up in the late 11th century among the lay public. A crusader would, after pronouncing a solemn vow, receive a cross from the hands of the pope or his legates, and was thenceforth considered a "soldier of the Church". This was partly because of the Investiture Controversy, which had started around 1075 and was still on-going during the First Crusade. As both sides of the Investiture Controversy tried to marshal public opinion in their favor, people became personally engaged in a dramatic religious controversy. The result was an awakening of intense Christian piety and public interest in religious affairs, and was further strengthened by religious propaganda, which advocated Just War in order to retake the Holy Land from the Muslims. The Holy Land included Jerusalem (where the death, resurrection and ascension into heaven of Jesus had taken place according to Christian theology) and Antioch (the first Christian city). Further, the remission of sin was a driving factor and provided any God-fearing man who had committed sins with an irresistible way out of eternal damnation in Hell. It was a hotly debated issue throughout the Crusades as what exactly "remission of sin" meant. Most believed that by retaking Jerusalem they would go straight to heaven after death. However, much controversy surrounds exactly what was promised by the popes of the time. One theory was that one had to die fighting for Jerusalem for the remission to apply, which would hew more closely to what Pope Urban II said in his speeches. This meant that if the crusaders were successful, and retook Jerusalem, the survivors would not be given remission.
Immediate cause
The immediate cause of the First Crusade was the Byzantine emperor Alexios I's appeal to Pope Urban II for mercenaries to help him resist Muslim advances into territory of the Byzantine Empire. In 1071, at the Battle of Manzikert, the Byzantine Empire was defeated, which led to the loss of all of Asia Minor (modern Turkey) save the coastlands. Although attempts at reconciliation after the East–West Schism between the Catholic Church in western Europe and the Eastern Orthodox Church had failed, Alexius I hoped for a positive response from Urban II and got it.
15th century illumination of Pope Urban II at the Council of Clermont, where he preached an impassioned sermon to take back the Holy Land.
When the First Crusade was preached in 1095, the Christian princes of northern Iberia had been fighting their way out of the mountains of Galicia and Asturias, the Basque Country and Navarre, with increasing success, for about a hundred years. The fall of Moorish Toledo to the Kingdom of León in 1085 was a major victory, but the turning points of the Reconquista still lay in the future. The disunity of Muslim emirs was an essential factor.
While the Reconquista was the most prominent example of European reactions against Muslim conquests, it is not the only such example. The Norman adventurer Robert Guiscard had conquered Calabria in 1057 and was holding what had traditionally been Byzantine territory against the Muslims of Sicily. The maritime states of Pisa, Genoa and Catalonia were all actively fighting Islamic strongholds in Majorca, freeing the coasts of Italy and Catalonia from Muslim raids. Much earlier, the Christian homelands of Syria, Lebanon, Palestine, Egypt, and so on had been conquered by Muslim armies. This long history of losing territories to a religious enemy created a powerful motive to respond to Byzantine Emperor Alexius I's call for holy war to defend Christendom, and to recapture the lost lands starting with Jerusalem.
The papacy of Pope Gregory VII had struggled with reservations about the doctrinal validity of a holy war and the shedding of blood for the Lord and had, with difficulty, resolved the question in favour of justified violence. More importantly to the Pope, the Christians who made pilgrimages to the Holy Land were being persecuted. Saint Augustine of Hippo, Gregory's intellectual model, had justified the use of force in the service of Christ in The City of God, and a Christian "Just War" might enhance the wider standing of an aggressively ambitious leader of Europe, as Gregory saw himself. The northerners would be cemented to Rome, and their troublesome knights could see the only kind of action that suited them. Previous attempts by the church to stem such violence, such as the concept of the "Peace of God", were not as successful as hoped. To the south of Rome, Normans were showing how such energies might be unleashed against both Arabs (in Sicily) and Byzantines (on the mainland). A Latin hegemony in the Levant would provide leverage in resolving the Papacy's claims of supremacy over the Patriarch of Constantinople, which had resulted in the Great Schism of 1054, a rift that might yet be resolved through the force of Frankish arms.
In the Byzantine homelands, the Eastern Emperor's weakness was revealed by the disastrous defeat at the Battle of Manzikert in 1071, which reduced the Empire's Asian territory to a region in western Anatolia and around Constantinople. A sure sign of Byzantine desperation was the appeal of Alexios I to his enemy, the Pope, for aid. But Gregory was occupied with the Investiture Controversy and could not call on the German emperor, so a crusade never took shape.
For Gregory's more moderate successor, Pope Urban II, a crusade would serve to reunite Christendom, bolster the Papacy, and perhaps bring the East under his control. The disaffected Germans and the Normans were not to be counted on, but the heart and backbone of a crusade could be found in Urban's own homeland among the northern French.
After the First Crusade
On a popular level, the first crusades unleashed a wave of impassioned, personally felt pious Christian fury that was expressed in the massacres of Jews that accompanied the movement of the Crusader mobs through Europe, as well as the violent treatment of "schismatic" Orthodox Christians of the east.
In the 13th century, Crusades never expressed such a popular fever, and after Acre fell for the last time in 1291 and the Occitan Cathars were exterminated during the Albigensian Crusade, the crusading ideal became devalued by Papal justifications of political and territorial aggressions within Catholic Europe.
The last crusading order of knights to hold territory were the Knights Hospitaller. After the final fall of Acre, they took control of the island of Rhodes, and in the 16th century, were driven to Malta, before being finally unseated by Napoleon Bonaparte in 1798.