sentences:  Zaire had previously competed at the 1968 Summer Olympics as "Congo-Kinshasa".The People's Republic of China made its first appearance in a Summer Olympics since 1952, while for the first time the Republic of China team participated under the politically contrived name of "Chinese Taipei".The Soviet Union led the Warsaw Pact members and other Communist countries in a boycott of the Los Angeles Olympics, in retaliation for the U.S.-led boycott of the Moscow Olympics four years earlier (over the Soviet Union's invasion of Afghanistan in 1979).