Korean Political History II: Chapter 7, Exercise 2 — Possible Solution
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APPROACH
The source says the policy formally ended in November 2010 under Lee
Myung-bak. The student gives 2008. I would not silently correct either date.

SENTENCE
"The Sunshine Policy, devised in 1998, formally ended in November 2010
according to one source; other accounts give a different end date, which I
have not resolved."

CAUTION
The chapter states the alternative date only as a recollection, not as a
verified claim.