The crusades were the war fought by the Europeans against the Muslim in the high Middle Ages. The travel route used by the crusaders was the Mediterranean Sea.
What are crusades?
The land of Europe was acquired by the Muslims, and to reacquire the Holy land of Palestine and Jerusalem, European launched the crusades.
The crusades were considered the holy war, fought by the Christian to reacquire control over the holy land from the Muslims.
After the first crusade, the three crusades were unsuccessful for the Europeans.
The crusaders fought for the land of Jerusalem and Palestine, and they use the route of water bodies through the Mediterranean Sea to fight.
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