You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For consistency, answers should be in all lower cased letters.

Category: WITCHCRAFT 
Clue: Until Dorothy showed up, these small folks toiled as slaves for Oz' Wicked Witch of the East
munchkins

Category: -ISMS 
Clue: Anthropophagy, another term for this practice, can really leave your bad taste in my mouth
cannibalism

Category: NATIONAL PARKS 
Clue: Scotty's Castle in this sweltering national park was built by insurance magnate Albert Johnson in the 1920s

death valley