Question: West Germany (Federal Republic of Germany) competed at the Olympic Games for the last time as an independent nation at the 1988 Summer Olympics in Seoul, in which country, following German reunification in 1990, a single German team would compete in the 1992 Summer Olympics?

Context paragraphs:
East Germany at the 1988 Summer Olympics: Athletes from East Germany (German Democratic Republic) competed at the Olympic Games for the last time as an independent nation at the 1988 Summer Olympics in Seoul, South Korea.  Following German reunification in 1990, a single German team would compete in the 1992 Summer Olympics.  259 competitors, 157 men and 102 women, took part in 157 events in 16 sports.

South Yemen at the 1988 Summer Olympics: South Yemen competed as the Yemen Democratic Republic at the 1988 Summer Olympics in Seoul, Korea.  It was the only time that the nation would compete at the Olympic Games.  After unification with North Yemen, the nation would later return as Yemen at the 1992 Summer Olympics.

West Germany at the 1988 Summer Olympics: West Germany (Federal Republic of Germany) competed at the Olympic Games for the last time as an independent nation at the 1988 Summer Olympics in Seoul, South Korea.  Following German reunification in 1990, a single German team would compete in the 1992 Summer Olympics.  347 competitors, 244 men and 103 women, took part in 194 events in 24 sports.

West Germany at the Olympics: West Germany competed at the Olympic Games between 1952 and 1988.  While in 1952 - Germany's first Olympics after World War II and the Partitions of Germany - there was a "de facto" West German team, given East Germany refused to collaborate, its results are counted towards Germany.  Likewise, between 1956 and 1964 both countries competed together under the Unified Team of Germany flag.  It was not until 1968 that a full-fledged West German team appeared, and it competed in all the Olympics but the 1980 Summer Olympics - as it adhered to the 1980 Summer Olympics boycott - until 1988.  Afterwards, the German reunification in 1990 reestablished the German team.

Estonia at the 1936 Winter Olympics: Estonia competed at the 1936 Winter Olympics in Garmisch-Partenkirchen, Germany.  The nation returned to the Winter Games after missing the 1932 Winter Olympics.  These Games would be the last time that Estonia would compete at the Winter Games as an independent nation until the 1992 Winter Olympics.  After the nation was annexed by the Soviet Union in 1940, Estonian athletes would compete at the Olympic Games as part of the USSR delegations.

Soviet Union at the 1988 Summer Olympics: The Soviet Union (USSR) competed, for the last time before its dissolution, at the 1988 Summer Olympics in Seoul.  481 competitors, 319 men and 162 women, took part in 221 events in 27 sports.  Athletes from 12 of the ex-Soviet republics would compete as the Unified Team at the 1992 Summer Olympics, and each nation would field independent teams in subsequent Games.

East Germany at the 1988 Winter Olympics: East Germany (German Democratic Republic) competed at the Winter Olympic Games for the last time at the 1988 Winter Olympics in Calgary, Alberta, Canada.  Following German reunification in 1990, a single German team would compete in the 1992 Winter Olympics.

Latvia at the 1936 Summer Olympics: Latvia competed at the 1936 Summer Olympics in Berlin, Germany.  29 competitors, all men, took part in 16 events in 6 sports.  It would be the last time that Latvia would compete at the Summer Games as an independent nation until the 1992 Summer Olympics.  After the nation was occupied by the Soviet Union in 1940, Latvian athletes were forced to compete at the Olympic Games as part of the USSR delegations.

West Germany at the 1988 Winter Olympics: West Germany (Federal Republic of Germany) competed at the Winter Olympic Games for the last time as a separate nation at the 1988 Winter Olympics in Calgary, Canada.  Following German reunification in 1990, a single German team would compete in the 1992 Winter Olympics.

German reunification: The German reunification (German: "Deutsche Wiedervereinigung" ) was the process in 1990 in which the German Democratic Republic (GDR/DDR/East Germany) joined the Federal Republic of Germany (FRG/West Germany) to form the reunited nation of Germany, and when Berlin reunited into a single city, as provided by its then Grundgesetz constitution Article 23.  The end of the unification process is officially referred to as German unity (German: "Deutsche Einheit" ), celebrated on 3 October (German Unity Day) (German: "Tag der deutschen Einheit" ).  Following German reunification, Berlin was once again designated as the capital of united Germany.

Supporting paragraphs: West Germany at the 1988 Summer Olympics German reunification
Answer: South Korea