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: FAMOUS SHIPS 
Clue: Commander Lloyd M. Bucher was the last captain of this U.S. ship
u.s.s. pueblo

Category: WORLD CAPITALS 
Clue: This city was once known as Dong Kinh & to Europeans as Tonquin
hanoi, vietnam

Category: BRITISH ENTREPRENEURS 
Clue: In 1839 Queen Victoria awarded him the first ever license to deliver mail across the Atlantic

cunard