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In page History of South Korea:

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Relations with the North improved, and a summit meeting was planned but postponed indefinitely with the death of Kim Il Sung. Tensions varied between the two Koreas after that, with cycles of small military skirmishes and apologies. The government also carried out substantial financial and economic reforms, joining the OECD in 1996, but encountered difficulties with political and financial scandals involving his son. The country also faced a variety of catastrophes: the Gupo Station rail accident[3] and the sinking of MV Seohae in 1993,[citation needed] the Seongsu Bridge disaster in 1994,[4] and the Sampoong Department Store collapse in 1995.[5][1]