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 simplicity, answers should be in all lower cased letters.

Category: VIVA MEXICO! 
Clue: President from 2000 to 2006, this "sly" guy had formerly been president of Coca Cola de Mexico
fox

Category: WORLD GEOGRAPHY 
Clue: This European grand duchy has 2 distinct land regions: the Ardennes & the Bon Pays
luxembourg

Category: HISTORIC NAMES 
Clue: He left the French army a captain & moved to America where he was made a major general in 1777

marquis de lafayette