Explain how the spread of Islam led to the crusades

Christians started the crusades in the past centuries. Christians usually organized them from the west of Europe. The purpose of the crusades, therefore, was to respond to the critics by Muslims to control Muslim spread that had occupied a large part of the land conquering pagan regions.

The launch this crusade however, led to the expulsion of many Christians from Syria. They, however, continued for many centuries but after some time, they were declined due to the formation of Protestants.

Answer:Islam came to the Southeast Asia, first by the way of Muslim traders along the main trade-route between Asia and the Far East, then was further spread by Sufi orders and finally consolidated by the expansion of the territories of converted rulers and their communities.

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.