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: WANNA BET? 
Clue: In the '50s, Edward Thorp fed millions of hands of this game into a computer which figured out how to win at it
blackjack

Category: MUSEUMS OF GERMANY 
Clue: A Baden-Baden museum devoted to the works of this Russian imperial jeweler opened in 2009
fabergé

Category: MINI-COUNTRIES 
Clue: A problem for this African country is that much of its mail is mistakenly sent to Switzerland

swaziland