Why is it likely that Cultural diffusion diminished in the Middle East during the first Crusade?

The entire structure of European society changed during the 12th and 13th centuries, and there was a time when this change was attributed largely to the Crusades. Historians now, however, tend to view the Crusades as only one, albeit significant, factor in Europe’s development. It is likely that the disappearance of old families and the appearance of new ones can be traced in part to the Crusades, but generalizations must be made with caution. It should, moreover, be remembered that, while some Crusaders sold or mortgaged their property, usually to ecclesiastical foundations, others bequeathed it to relatives. The loss of life was without doubt considerable; many Crusaders, however, did return to their homes.

Explanation:

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