For only one reason
Which is Religion
Arab Muslims as well as Arab Christians fought together the crusaders as invaders and not as Christians.
Muslims and Christians
The Crusades were fought by the Christians and the Muslims.
How about the Christians and Muslims
Muslims and christians
Muslims over control of the Holy Land in the medieval period. They spanned from the 11th to the 13th century and had significant political, economic, and social consequences in both Europe and the Middle East.
The Crusades were a series of holy wars fought between Christians and Muslims for control of Jerusalem and the Holy Land during the Middle Ages. The First Crusade was launched in 1096 and resulted in the capture of Jerusalem by Christian forces in 1099. Subsequent Crusades followed over the span of two centuries.
Those who fought during the crusades were: the Seljuk Turks, the European Christians, and the Muslims.
The two mains sides that fought in the crusades were the Christians and Muslims.
Spain was historically a christian country when Muslims fought it and invaded it, it was ruled by Muslims but as the time passes the empire grew weaker and weaker and Christians fought to regain the country.
Christians and Muslims !
Muslims. But the true goal of the crusades was to get rich.