 Complete the following phrase:  The Chronica is one of the most important surviving documents for the history of Latin Europe. Despite its focus on England, Matthews work extends to regions as far afield as Norway, Hungary, and Sicily as well as the crusader states. It continues to be mined for its coverage of the Mongol invasions, its detailed report of the conflict between Fredrick II and successive popes, as well as its commentary on the outbreak of the 