.
Hereof, what was the reason for the Crusades?
The Crusades were organized by western European Christians after centuries of Muslim wars of expansion. Their primary objectives were to stop the expansion of Muslim states, to reclaim for Christianity the Holy Land in the Middle East, and to recapture territories that had formerly been Christian.
Likewise, what do the Crusades teach us? Ultimately the Crusades failed to create the Holy Land that was part of Christendom, but in the process they changed the western world forever. The Crusaders learned more about warfare – better castle design and gunpowder. Muslim scholars taught European scholars many things about science and medicine.
Moreover, how long did the crusades last?
200 years
What happened in the First Crusade?
During the First Crusade, Christian knights from Europe capture Jerusalem after seven weeks of siege and begin massacring the city's Muslim and Jewish population. In 1095, Pope Urban II publicly called for a crusade to aid Eastern Christians and recover the holy lands. The response by Western Europeans was immediate.