No surprise: Islam was at fault for the Crusades, and a bunch of other very bad stuff.

After the end of the Latin Roman Empire, the Mediterranean remained a Christian lake, open to commercial and cultural exchange between the new kingdoms in the West and the Greek Roman Christian Empire.  It was Islam, not the “barbarian invaders,” which broke the unity of the Christian world, thereby interrupting commercial and cultural exchange between the Christian East and the Christian West, propitiating the rise of the Carolingian “Roman” Empire, turning the Mediterranean into a Muslim lake, and therefore moving the cultural axis of the Christian West from the Mediterranean to the North: “the cause of the break with the tradition of antiquity was the rapid and unexpected advance of Islam.”

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