the crusades were military expeditions undertaken by european christians to regain the holy land from the…

the crusades were military expeditions undertaken by european christians to regain the holy land from the muslims. muslim armies who sought to conquer christian europe. christian and muslim armies who joined to fight the mongols. european christians who wanted to destroy constantinople.
Answer
Answer:
European Christians to regain the Holy Land from the Muslims.
Brief Explanations:
The Crusades were launched by European Christians. Their main goal was to take back the Holy Land (Palestine, especially Jerusalem) which was under Muslim control. Muslim armies were on the defensive in the Holy Land during the Crusades, not the ones initiating to conquer Christian Europe. There was no joint Christian - Muslim fight against Mongols in the context of the Crusades. And the main target was the Holy Land, not Constantinople (though the Fourth Crusade infamously sacked Constantinople, but that was a deviation from the original goal of regaining the Holy Land). So the correct answer is that the Crusades were military expeditions undertaken by European Christians to regain the Holy Land from the Muslims.