Crusades against Muslims were called for what?

Crusades against Muslims were created to stop Islamic invasion of Europe in the middle ages.

Answer: The Crusades were a series of religious wars between Christians and Muslims started primarily to secure control of holy sites considered sacred by both groups. Throughout the remainder of the 13th century, a variety of Crusades aimed not so much to topple Muslim forces in the Holy Land but to combat any and all of those seen as enemies of the Christian faith.