Blanche of Castile ruled France as regent while her son Louis IX left on what kind of expedition in 1248?

The stock market crash of October 24, 1929, was "Black Thursday"; what is the crash of October 19, 1987, called? Blackwell's, a famous bookshop founded in 1879, is in which British university city? Will Ferrell and Jon Heder play rival competitors in which sport in "Blades of Glory"? On which NBC series did Blair Underwood play President Elias Martinez? A BLAT sandwich is a BLT with which additional ingredient? "Bleeding Kansas" got its name from violence over which issue in the 1850s? Which blended-language term was also the title of a 2004 Adam Sandler film? Bleu des Causses, matured in natural caves in southern France, is a type of what?