The First Crusade was launched in 1096 by Pope Urban II with the dual goals of conquering the sacred city of Jerusalem and the Holy Land and freeing the Eastern Christians from Islamic rule. What started as an appeal by Byzantine Emperor Alexius I Comnenus for western mercenaries to fight the Seljuk Turks in Anatolia quickly turned into a wholescale Western migration and conquest of territory outside of Europe. Both knights and peasants from many nations of Western Europe travelled over land and by sea towards Jerusalem and captured the city in July 1099, establishing the Kingdom of Jerusalem and other Crusader states. Although these gains lasted for less than two hundred years, the First Crusade was a major turning point in the expansion of Western power, as well as the first major step towards reopening international trade in the West since the fall of the Western Roman Empire.
BackgroundThe origins of the Crusades in general, and of the First Crusade in particular, stem from events earlier in the Middle Ages. The breakdown of the Carolingian Empire in previous centuries, combined with the relative stability of European borders after the Christianization of the Vikings and Magyars, gave rise to an entire class of warriors who now had little to do but fight among themselves.
By the early 8th century, the Umayyad Caliphate had rapidly captured North Africa, Egypt, Palestine, Syria, and Spain from a predominantly Christian Byzantine Empire. During the 12th century, the Reconquista picked up an ideological potency that is considered to be the first example of a concerted "Christian" effort to recapture territory lost to Muslims, as part of the expansion efforts of the Christian kingdoms along the Bay of Biscay. Spanish kingdoms, knightly orders and mercenaries began to mobilize from across Europe for the fight against the surviving and predominantly Moorish Umayyad caliphate at Cordoba. 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 Church of the Holy Sepulchre destroyed.
Other Muslim kingdoms emerging from the collapse of the Umayyads in the 8th century, such as the Aghlabics, had entered Italy in the 9th century. The Kalbid state that arose in the region, weakened by dynastic struggles, became prey to the Normans capturing Sicily by 1091. Pisa, Genoa, and Aragon began to battle other Muslim kingdoms for control of the Mediterranean, exemplified by the Mahdia campaign and battles at Mallorca and Sardinia.
The idea of a Holy War against the Muslims seemed acceptable to medieval European secular and religious powers, as well as the public in general, for a number of reasons, such as the recent military successes of European kingdoms along the Mediterranean. In addition there was the emerging political conception of Christendom, which saw the union of Christian kingdoms under Papal guidance for the first time (in the High Middle Ages) and the creation of a Christian army to fight the Muslims. Many of the Muslim lands had previously been Christian prior to their conquest by the Islamic armies, namely those which had formed part of the Roman and Byzantine empires - Syria, Egypt, the rest of North Africa, Hispania (Spain), Cyprus, Judaea. Finally, Jerusalem, along with the surrounding lands including the places where Christ lived and died, was understandably sacred to Christians.
In 1074, Pope Gregory VII called for the milites Christi ("soldiers of Christ") to go to the aid of the Byzantine Empire in the east. The Byzantines had suffered a serious defeat at the hands of the Seljuk Turks at the Battle of Manzikert three years previously.[3] This call, while largely ignored and even opposed, combined with the large numbers of pilgrimages to the Holy Land in the 11th century, focused a great deal of attention on the east.[4] Preaching by monks such as Peter the Hermit and Walter the Penniless, which spread reports of Muslims abusing Christian pilgrims travelling to Jerusalem and other Middle Eastern holy sites, further stoked the crusading zeal. It was Pope Urban II who first disseminated to the general public the idea of a Crusade to capture the Holy Land. Upon hearing his dramatic and inspiring speech, the nobles and clergy in attendance began to chant the famous words, Deus vult! ("God wills it!").[