OCR History AS level- The Crusades Watch
I did the first one and put the main reason there was a crusade was to capture Jerusalem, and to improve Byzantine relations, continue papal reforms and to divert fighting in Europe onto the middle east
I also did the second one and said that Crusader states were weak as poor leadership, small military orders, reliance on external help and they only looked strong due to muslim disunity???
The third one looked impossible!