Magna Carta http://www.archives.gov/exhibits/featured_documents/magna_carta/
Crusades http://www.medievalcrusades.com/crusadesbegin.htm
Hundred Years War http://ehistory.osu.edu/osu/archive/hundredyearswar.cfm?CFID=7345256&CFTOKEN=61618613&jsessionid=ea304d3b8793267bde05681578474b4e4f65
War of Roses http://www.warsoftheroses.com/
Inquisition http://www.geocities.com/iberianinquisition/