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: TRANSPORTATION 
Clue: In 1910 the "Deutschland" inaugurated commercial passenger service in one of these
zeppelin/dirigible

Category: AMERICAN LITERATURE 
Clue: Controversial even when serialized in the "National Era", it sold over 300,000 copies in book form in 1852
uncle tom\'s cabin

Category: 20th CENTURY WOMEN 
Clue: At this woman's April 1998 funeral, Gloria Steinem called her "The woman we want to be after the revolution"

bella abzug