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thumb, from a medieval miniature painting, during the First Crusade.]]

The Crusades were a series of religion-driven military campaigns waged by much of Latin Christian Europe. Crusades to regain 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 lasted into the 15th century.

The crusades were fought mainly against Muslims, although campaigns were also waged against pagan Slavs, Jews, Russian and Greek Orthodox Christians, Mongols, Cathars, Hussites, Waldensians, Old Prussians, and political enemies of the popes.

The Crusades originally had the goal of recapturing Jerusalem and the Holy Land from Muslim rule and were launched in response to a call from the Eastern Orthodox 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 LevantA a none usually against pagans, heretics, and peoples under the ban of excommunication

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 took 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. Another theory was that if one reached Jerusalem, one would be relieved of the sins one had committed before the Crusade. Therefore one could still be sentenced to Hell for sins committed afterwards.

All of these factors were manifested in the overwhelming popular support for the First Crusade and the religious vitality of the 12^th century.

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 Western Church and the Eastern Orthodox Church had failed, Alexius I hoped for a positive response from Urban II and got it, although it turned out to be more expansive and less helpful than he had expected.

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 and Sardinia, 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. During many of the attacks on Jews, local Bishops and Christians made attempts to protect Jews from the mobs that were passing through. Jews were often offered sanctuary in churches and other Christian buildings.

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 sixteenth century, were driven to Malta, before being finally unseated by Napoleon Bonaparte in 1798.

List

A traditional numbering scheme for the crusades totals nine during the 11th to 13th centuries. This division is arbitrary and excludes many important expeditions, among them those of the 14th, 15th, and 16th centuries. In reality, the crusades continued until the end of the 17th century, the crusade of Lepanto occurring in 1571, that of Hungary in 1664, and the crusade to Candia in 1669. The Knights Hospitaller continued to crusade in the Mediterranean Sea around Malta until their defeat by Napoleon in 1798. There were frequent ''minor'' Crusades throughout this period, not only in Palestine but also in the Iberian Peninsula and central Europe, against Muslims and also Christian heretics and personal enemies of the Papacy or other powerful monarchs.

First Crusade 1095-1099

In March 1095 at the Council of Piacenza, ambassadors sent by Byzantine Emperor Alexius I called for help with defending his empire against the Seljuk Turks. Later that year, at the Council of Clermont, Pope Urban II called upon all Christians to join a war against the Turks, promising those who died in the endeavor would receive immediate remission of their sins.

The Siege of Antioch took place shortly before the siege on Jerusalem during the first Crusade. Antioch fell to the Franks in May 1098 but not before a lengthy siege. The ruler of Antioch was not sure how the Christians living within his city would react and he forced them to live outside the city during the siege, though he promised to protect their wives and children from harm, while Jews and Muslims fought together. The siege only came to end when the city was betrayed and the Franks entered through the water-gate of the town causing the leader to flee. Once inside the city, as was standard military practice at the time, the Franks then massacred the civilians, destroyed mosques and pillaged the city. The crusaders finally marched to the walls of Jerusalem with only a fraction of their original forces.

Siege of Jerusalem

The Jews and Muslims fought together to defend Jerusalem against the invading Franks. They were unsuccessful though and on 15 July 1099 the crusaders entered the city. One historian has written that the ''isolation, alienation and fear'' On the other side of the Mediterranean, however, the Second Crusade met with great success as a group of Northern European Crusaders stopped in Portugal, allied with the Portuguese King, Afonso I of Portugal, and retook Lisbon from the Muslims in 1147. North Germans and Danes attacked the Wends during the 1147 Wendish Crusade, which was unsuccessful as well.

Third Crusade 1187–1192

In 1187, Saladin, Sultan of Egypt, recaptured Jerusalem, following the Battle of Hattin. After taking Jerusalem back from the Christians, the Muslims spared civilians and for the most part left churches and shrines untouched to be able to collect ransom money from the Franks. Saladin is remembered respectfully in both European and Islamic sources as a man who ''always stuck to his promise and was loyal.'' The reports of Saladin's victories shocked Europe. Pope Gregory VIII called for a crusade, which was led by several of Europe's most important leaders: Philip II of France, Richard I of England (aka Richard the Lionheart), and Frederick I, Holy Roman Emperor. Frederick drowned in Cilicia in 1190, leaving an unstable alliance between the English and the French. Before his arrival in the Holy Land Richard captured the island of Cyprus from the Byzantines in 1191. In spite of such criticism, the movement was widely supported in Europe long after the fall of Acre in 1291. Historians agree that St. Francis of Assisi crossed enemy lines to meet the Sultan of Egypt. Hoeberichts cast doubt on the intentions most Christian historians assign to Francis. From the fall of Acre forward, the Crusades to recover Jerusalem and the Christian East were largely lost. Later, 18th century Enlightenment thinkers judged the Crusaders harshly. Likewise, some modern historians in the West expressed moral outrage. In the 1950s, Sir Steven Runciman wrote a resounding condemnation:

Historical perspective

Western and Eastern historiography present variously different views on the crusades, in large part because ''crusade'' invokes dramatically opposed sets of associations—''crusade'' as a valiant struggle for a supreme cause, and ''crusade'' as a byword for barbarism and aggression.

Legacy

Politics and culture

The Crusades had an enormous influence on the European Middle Ages. At times, much of the continent was united under a powerful Papacy, but by the 14th century, the development of centralized bureaucracies (the foundation of the modern nation-state) was well on its way in France, England, Spain, Burgundy, and Portugal, and partly because of the dominance of the church at the beginning of the crusading era.

Although Europe had been exposed to Islamic culture for centuries through contacts in Iberian Peninsula and Sicily, much knowledge in areas such as science, medicine, and architecture was transferred from the Islamic to the western world during the crusade era.

The military experiences of the crusades also had their effects in Europe; for example, European castles became massive stone structures as they were in the east, rather than smaller wooden buildings as they had typically been in the past.

In addition, the Crusades are seen as having opened up European culture to the world, especially Asia:

Along with trade, new scientific discoveries and inventions made their way east or west. Arab advances (including the development of algebra, optics, and refinement of engineering) made their way west and sped the course of advancement in European universities that led to the Renaissance in later centuries

The invasions of German crusaders prevented formation of the large Lithuanian state incorporating all Baltic nations and tribes. Lithuania was destined to become a small country and forced to expand to the East looking for resources to combat the crusaders.

Trade

The need to raise, transport and supply large armies led to a flourishing of trade throughout Europe. Roads largely unused since the days of Rome saw significant increases in traffic as local merchants began to expand their horizons. This was not only because the Crusades ''prepared'' Europe for travel, but also because many ''wanted'' to travel after being reacquainted with the products of the Middle East. This also aided in the beginning of the Renaissance in Italy, as various Italian city-states from the very beginning had important and profitable trading colonies in the crusader states, both in the Holy Land and later in captured Byzantine territory.

Increased trade brought many things to Europeans that were once unknown or extremely rare and costly. These goods included a variety of spices, ivory, jade, diamonds, improved glass-manufacturing techniques, early forms of gun powder, oranges, apples, and other Asian crops, and many other products.

From a larger perspective, and certainly from that of noted naval/maritime historian Archibald Lewis, the Crusades must be viewed as part of a massive macrohistorical event during which Western Europe, primarily by its ability in naval warfare, amphibious siege, and maritime trade, was able to advance in all spheres of civilization. Recovering from the Dark Ages of AD 700-1000, throughout the 11th century Western Europe began to push the boundaries of its civilization. Prior to the First Crusade the Italian city-state of Venice, along with the Byzantine Empire, had cleared the Adriatic Sea of Islamic pirates, and loosened the Islamic hold on the Mediterranean Sea (Byzantine-Muslim War of 1030-1035). The Normans, with the assistance of the Italian city-states of Genoa and Pisa, had retaken Sicily from the Muslims from 1061-1091. These conflicts prior to the First Crusade had both retaken Western European territory and weakened the Islamic hold on the Mediterranean, allowing for the rise of Western European Mediterranean trading and naval powers such as the Sicilian Normans and the Italian city-states of Venice, Genoa, and Pisa.

During the Middle Ages, the key trading region of the Earth was the Black Sea-Mediterranean Sea-Red Sea. It was the aforementioned pre-First Crusade actions, along with the Crusades themselves, which allowed Western Europe to control the trade of the Mediterranean Sea and Black Sea, a control which began in the 1000s and would only be threatened by the Turkish Ottoman Empire beginning in the mid-to-late 1400s. This Western European control of vital sea lanes allowed the economy of Western Europe to advance to previously unknown degrees, most obviously as regards the Maritime Republics of Venice, Genoa, and Pisa. Indeed, it is no coincidence that the Renaissance began in Italy, as the Maritime Republics, through their control of the Eastern Mediterranean and Black Seas, were able to return to Italy the ancient knowledge of the Greeks and Romans, as well as the products of distant East Asia.

Combined with the Mongol Empire, Western Europe traded extensively with East Asia, the security of the Mongol Empire allowing the products of Asia to be brought to such Western European controlled ports as Acre, Antioch, Kaffa (on the Black Sea) and even, for a time, Constantinople itself. The Fifth Crusade of 1217-1221 and the Seventh Crusade of 1248-1254 were largely attempts to secure Western European control of the Red Sea trade region, as both Crusades were directed against Egypt, the power base of the Ayyubid, and then Mameluke, Sultanates. It was only in the 1300s, as the stability of trade with Asia collapsed with the Mongol Empire, the Mamelukes destroyed the Middle Eastern Crusader States, and the rising Ottoman Empire impeded further Western European trade with Asia, that Western Europeans sought alternate trade routes to Asia, ultimately leading to Columbus's voyage of 1492.

Caucasus

In the Caucasus Mountains of Georgia, in the remote highland region of Khevsureti, a tribe called the Khevsurs are thought to possibly be direct descendants of a party of crusaders who got separated from a larger army and have remained in isolation with some of the crusader culture intact. Into the 20th century, relics of armor, weaponry and chain mail were still being used and passed down in such communities. Russian serviceman and ethnographer Arnold Zisserman who spent 25 years (1842–67) in the Caucasus, believed the exotic group of Georgian highlanders were descendants of the last Crusaders based on their customs, language, art and other evidence. American traveler Richard Halliburton saw and recorded the customs of the tribe in 1935.

Etymology and usage

The crusades were never referred to as such by their participants. The original crusaders were known by various terms, including ''fideles Sancti Petri'' (the faithful of Saint Peter) or ''la milites Christi'' (knights of Christ). They saw themselves as undertaking an ''iter'', a journey, or a ''peregrinatio'', a pilgrimage, though pilgrims were usually forbidden from carrying arms.

Like pilgrims, each crusader swore a vow (a ''votus''), to be fulfilled on successfully reaching Jerusalem, and they were granted a cloth cross (''crux'') to be sewn into their clothes. This ''taking of the cross'', the ''crux'', eventually became associated with the entire journey; the word ''crusade'' (coming into English from the French ''croisade'', the Italian ''crociata'', the Portuguese ''cruzada'', or the German ''Kreuzzug'') developed from this.