Just 3 reasons? ok then, they were unprepared for the desert climate, they had a poor reputation with the locals, and they were considered "devils" so no one wanted anything to do with them.
Answer:
Seize-Take Hold Suddenly Or Forcibly
To be honest I think answer is two
(this isnt an answer) Obviously you came from k12 so we are in the same boat, did you ever find the answer?
Venice flourished as a result of the Crusaders because, people flew into Venice and which increased its power as a city-state . Crusaders depended on those cities for supplies. The Crusades also led to an increase in trade between the Middle East and Europe and contributed to Venice’s dominance of the Mediterranean during the Crusades.