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: MAKE IT STICK 
Clue: Use instant glue for glass & white glue with a clamp for wood, which has these, like skin, for glue to enter

Answer: pores


Question: Category: CAPTURE THE FLAG 
Clue: Afghanistan's flag has a mosque in a wreath made of stalks of this grain

Answer: wheat


Question: Category: AMERICAN HISTORY 
Clue: Congress adopted this document in 1777, but it was not fully ratified by the states for another 4 years

Answer:
the articles of confederation