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.
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Question: Category: THE 1970s 
Clue: In 1977 Bank of America changed the name of its Bank Americard to this 4-letter word

Answer: visa


Question: Category: BROOKLYN IS BOOKLAND 
Clue: In a book by this author, "The Assistant" works in a Brooklyn grocery store

Answer: bernard malamud


Question: Category: GREAT SCOTT! 
Clue: 2 days after James Buchanan's Inauguration, the Supreme Court announced its decision regarding this man

Answer:
dred scott