12. See The Teutonic Knights, page 68.
13. See Mamelukes Usurp Power in Egypt, page 240.
14. See Louis IX Leads the Last Crusade, page 275.
15. See The Sicilian Vespers, page 340.
16. See First Great Jubilee of the Roman Catholic Church, page 378.
17. See Rise of the Hanseatic League, page 214.
18. See Founding of the House of Hapsburg, page 298.
19. See Founding of the Mongol Empire, page 103.
20. See Russia Conquered by the Tartar Hordes, page 196.
21. See Height of the Mongol Power in China, page 287.