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.

[Q]: Category: ENGLISH USAGE 
Clue: Latin for "thus", this 3-letter word is put in brackets to indicate an error in a quote
[A]: sic


[Q]: Category: A NATION DIVIDED 
Clue: It was officially divided into North & South in 1953
[A]: korea


[Q]: Category: HOLIDAYS & OBSERVANCES 
Clue: This holiday began in 1868 when a general designated a day to adorn the graves of the Civil War dead
[A]:
memorial day