https://en.wikipedia.org/wiki/Timeline_of_Korean_history
https://www.bbc.com/news/world-asia-pacific-15292674
1945:
(Aug 6) US drops first atomic bomb ‘Little Boy’ on Hiroshima (by B-29 Superfortress)
(Aug 8) Soviet Union declares war on Japan; invades Manchuria and Korea
(Aug 9) US drops second atomic bomb ‘Fat Man’ on Nagasaki
(Aug 10-15) Korea divided at 38th parallel; US-controlled South, Soviet-controlled North
(Aug 14) Japanese unconditional surrender; WW2 end
(Sep 2) Victory over Japan day; Japan formally surrenders onboard USS Missouri
1950:
(Jun 25) Korean War (1950-1953) commences with invasion from Soviet-supported North
(Sep 15-19) MacArthur led US troops land in Incheon, cuts North Korean supply line, turns tide of war

1953:
Armistice ends Korean War (1950-1953)

1960:
(Apr) President Lee Seungman (Syngman Rhee) steps down after student protest
1961:
(May 16) General Park Chung Hee coup

1972:
South Korea declares martial law
1979:
(Oct 26) South Korean president Park Jung Hee assassinated by by KCIA director Kim Jae Kyu
(Dec) general Chun Doo Hwan becomes de facto leader (official term Aug80-Feb88)

1980:
(May) Gwangju massacre in South Korea
1986:
South Korean constitution changed allowing direct presidential elections
1987:
President Chun Doo Hwan outsted by pressure
1988:
(Feb) Roh Tae Woo democratically elected president of South Korea, ending decades of dictatorship

(Sep-Oct) Seoul hosts 1988 Summer Olympics

1996:
South Korea admitted into OECD
1992:
1st Hallyu wave (international export of Korean pop culture)Â
1997:
(Dec) Asian Financial Crisis hits South Korea. Koreans remember it as IMF Crisis, and protest the austerity measures imposed by the IMF for its bailout.

1998:
Newly elected president Kim Dae Jung advocates “sunshine policy” aid to North Korea
2000:
(Jun) North and South Korea summit
2001:
Incheon international airport opens
2002:
(Jun) South Korea’s historic run to 2002 World Cup semifinals ignites national pride (but attracts plenty of controversy over rigged referees).

2010:
(Nov) North-South tensions escalate amid naval encounters
2012:
(Dec) First female president Park Geun-hye elected
2017:
(Feb) North Korean assasinates Kim Jong Un brother in Malaysia
(Mar) President Park Geun-Hye impeached; later sentenced to 20 years for abuse of power


2018:
(Apr) Kim Jong-un becomes first North Korean leader to enter South Korea
(Jun) Trump and North Korean Kim Jong-un meet in Singapore

2019:
(Feb) US-North Korea talks break down over pace of nuclear disarmament