Final answer:
The Crusades are labeled as the 'holy wars' because Christian Europe was trying to protect their holy places from attacks.
Step-by-step explanation:
The Crusades are labeled as the 'holy wars' because Christian Europe was trying to protect their holy places from attacks. At that time, the holy sites of Jerusalem, Bethlehem, and other places in the Holy Land were under the control of Muslim forces. The Christians considered these sites sacred and embarked on a series of military campaigns known as the Crusades to regain control over them.
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