Misc: what was the series of campaigns to wrest the holy land from muslim turks?

Questions

Cereal Appeal: This chocolaty cereal features Fred Flintstone and Barney Rubble?

Cereal Appeal: This is the animal that never learns, "Trix are for kids!"?

Childrens Literature: Author of "The BFG" (big friendly giant)??

Childrens Literature: Leonard Wibberly on the Duchy of Grand Fenwick??

Childrens Literature: Tool that Mike Mulligan used. (Seuss)??