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: HISTORY 
Clue: Tho this country was given independence in 1922 under King Fuad I, British troops remained
egypt

Category: SINGERS 
Clue: This singer played detective Foxxy Cleopatra in the third "Austin Powers" movie
beyoncé knowles

Category: GENERAL SCIENCE 
Clue: It's the "specific" ratio between the density of pure water & that of another substance; for gold, it's 19.3

specific gravity