Critical Thinking Questions   Map List       If you'd like to print out this page, click the Print button above. Alternatively, you may click the printer icon on your browser's toolbar, or choose File>Print from the menu.     1. What aspects of international cooperation would be necessary among the countries carrying out the Crusades? 2. In what ways did the Catholic Church serve as a supranational body able to induce the various states to do its bidding? 3. Some crusaders traveled by land, others by sea. What would be the advantages and disadvantages to both types of travel for the crusaders? 4. What was the approximate distance overland from Paris to Jerusalem? How many days would it take a crusader to travel that distance if he averaged 30 miles a day?