Islam was born in around 610 AD when a man named Muhammad started receiving revelations from God through the Archangel Gabriel. Muhammad bears much resemblance to Jesus in that he was from a poor family, and he was also illiterate.

After he started receiving these revelations, Muhammad had his family and a few others converted to Islam, but the people of Mecca clung to Zoroastrianism–the ancient, pagan religion Mecca adhered to. Like Jesus, Muhammad was forced to flee Mecca, his hometown, and seek refuge in the neighboring city of Medina. Unlike Jesus, though, Muhammad waged war against Mecca. The war was long and bloody, but it finally fell to Muhammad and his followers in 632, just a few years before Muhammad’s death.

Muhammad took what he learnt from the teachings of Christianity and Judaism, but made a new religion that was much more refined and profound: Islam.

‘Islam’ means total submission to God’s (Allah’s) will.

Islam took root in Medina during Muhammad’s life, but much more so after his death. Thanks to his ardent, loyal followers.

Caliph and common Arab alike believed that Islam was the one and only true religion; the only path to salvation. Every man–Islam regarded women as second class citizens and still does to this day–must submit themselves to the will of God (Allah). This ultimately resulted in an insatiable desire to unite the entire world under the banner of Islam.

From the mid seventh century until the early eighth century, the Muslim armies were unconquerable: within the second half of the seventh century, Iraq, Syria, Egypt, most of Persia, and the entire north coast of Africa fell to the Muslims. Then, in 711, Islamic forces invaded Spain. Within two decades, they conquered most of Iberia (Spain).

The booty and slaves captured from conquered territory brought the Muslims immense wealth. They were also united under one Caliph and their armies, organized. That is what enabled them to keep on expanding. They would have taken over Europe–the world–had not Charles “The Hammer” Martel roundly defeated them at the Battle of Poitiers in 732 AD. Badly beaten and significantly mowed down in size, the Muslim army retreated back to Spain and never again set foot on French soil.

It should also be noted that, as early as the eighth century, Muslim unity had begun to splinter into several factions; another reason why Muslim expansion westward was halted. They began to direct their conflict inwards, against each other, rather than against the ‘infidel’.

What happened to Christians and Jews in conquered territories?

Ironically, the Muslims did not force immediate conversion upon the Christians and Jews. In fact, the Muslims referred to them as “Peoples of the Book.” For this reason, Christians and Jews were allowed to practice their religion, but not without consequence. They were considered as second class citizens, so were required to pay a heavy poll tax. Having to choose between poverty, other forms of persecution, and their faith, many Christians and Jews chose to convert to Islam.

Starting in the early eleventh century, the treatment of Christians deteriorated under the rule of Caliph al-Hakim.

“The Christians were ordered to dress in black and to hang wooden crosses from their necks, half a metre long, half a metre wide, weighing five ratls.”

“Several people were flogged for playing chess. Churches were destroyed and their contents pillaged as also were their tenement houses and the houses pertaining to them,” wrote Egyptian Scholar, Al-Maqrizi in the fifteenth century.

Pilgrims and Christians living within the boundaries of the Byzantine Empire heard of al-Hakim’s persecution of Christians and were appalled. So much, they couldn’t keep silent. Stories inevitably found their way back west and fuelled Christian hatred of the Muslims, especially among the clergy.

In the early eleventh century, Pope Sergius IV attempted to start a crusade against al-Hakim.

‘Let all Christians know that news has come from the east to the seat of the apostles that the church of the Holy Sepulcher has been destroyed from roof to foundations at the impious hands of the pagans…’

‘With the Lord’s help we intend to kill all these enemies and to restore and Redeemer’s Holy Sepulcher,’ wrote Pope Sergius IV.

It wouldn’t be until the end of the eleventh century that this call to arms, call for Holy War, would take on more vigor, intensity and genuine hatred for Muslims. Only one man would set Christendom on fire with crusading zeal: Pope Urban II.

Sources Used:

Asbridge, Thomas. The Crusades: The Authoritative History of The War For The Holy Land.

Ecco; New York, 2011

Stewart, Chris and Ted Stewart. 7 Tipping Points That Saved the World. Shadow Mountain; Salt Lake City, 2011.

Various contributors. Chronicles of the Crusades: Eye-Witness Accounts of The Wars Between Christianity and Islam. Bramley Books; Portugal, 1997.