How did crusaders change the Holy Land after the First Crusade?

After the First Crusade, crusaders established four Christian states in the Holy Land and nearby areas: the Kingdom of Jerusalem, the County of Edessa, the Principality of Antioch, and the County of Tripoli. These states bordered Muslim territories, so A is correct. They did not make the region broadly safe for Jewish people or welcome all faiths equally to Jerusalem.

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