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 consistency, answers should be in all lower cased letters.
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Question: Category: THE HISTORY OF APRIL 9th 
Clue: 1959: NASA publicly introduces Messrs. Glenn, Shepard & the rest of this program's 7 astronauts

Answer: mercury


Question: Category: THOSE WACKY GERMANS 
Clue: From 1949 to 1990 Germany was split into 2 countries, which were called this

Answer: east & west germany


Question: Category: WED TO THE IDEA 
Clue: A married couple may start off as a DINK couple, an acronym for this

Answer:
double income, no kids