-Result of Crusade- Richard attempted to take control of Jerusalem and failed, He made a treaty to Saladin and he allowed Christian pilgrims to enter Jerusalem freely.
The Movie Kingdom of Heaven was more History in my opinion, due to the scenes in the movie were true to how it was in the 12th century, there was only a few things that i found to be fake.
From the 1st Crusade to the 4th, I think the motives changed by at first they wanted to go on Crusades, due to being told they where guaranteed a spot in heaven, and that all their Sins would be removed, as in later it was more about revenge, and wanting more land and power.
In my opinion the greatest result of the crusades was that the crusaders gained more knowledge, due to Christians learning numbers, some alphabet, utensils, decoration, and machinery.