Crusades are an interesting dynamic of the game. It is indeed those crusades, usually to the Levant, that are the most challenging and interesting. I often send a crusade to somewhere like Antioch over land and first try to capture the province and then try to see how long they can hold out without support. In one very memorable campaign as the English a crusade managed not only to survive but also to expand, totally unaided by the west, into neighbouring provinces, take most of Asia Minor and the Levant and then fight a successful defence against the Mongols. It was quite literally a few hundred years later that the two sides were reunited.
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