koreanhistory1-10, Exercise 3: Three turning points compared (a sample; yours will differ)

Model answer:

1987: [Source] Mass demonstrations (about 1.5 million on 18 June; over 1 million on 26 June) after Park Jong-chul's death and Lee Han-yeol's injury; Chun ordered troops mobilised on 19 June but rescinded it within hours; Roh's 29 June declaration led to a constitutional amendment approved by 94.4% on 28 October and an election on 16 December. Left out: the single five-year term (not in the text), why Chun accepted (only "fearing a repeat of Gwangju" as the article's explanation).

2016-2017: [Source] The National Assembly voted 234 to 56 on 9 December 2016 after the Choi Soon-sil scandal; the Constitutional Court ruled 8 to 0 on 10 March 2017; Moon Jae-in won on 9 May 2017. Left out: crowd sizes, and the tally and deadline inconsistencies.

2024-2025: [Source] Yoon declared martial law at 22:27 on 3 December 2024; 190 legislators voted to lift it at 01:02; the Assembly impeached him on 14 December; the Court upheld the impeachment on 4 April (year inferred 2025); Lee Jae Myung won on 3 June 2025. Left out: the later sections and the lead's unsourced sentencing claim.

[My own reading: in each case an institution (the people on the streets, the Assembly and Court, the Assembly floor) acted at a moment when the executive could have acted differently; the sources report the events, not this comparison.]