
Mikhail Gorbachev was made a member of the Communist Party Central Committee(CPSU) in 1971. In 1974, he was made a Representative to the Supreme Soviet of the Soviet Union and Chairman of the Standing Commission on Youth Affairs. He was appointed to the Central Committee's Secretariat for Agriculture in 1978, replacing Fyodor Kulakov who died of a heart attack.
In 1979, Gorbachev was promoted to the Politburo, the highest authority in USSR, and received full membership in 1980.
During Yuri Andropov's tenure as General Secretary (1982–1984), Gorbachev became one of the Politburo's most visible and active members. Working together with Andropov, 20 percent of the governmental officers were placed mostly with younger replacements.
Gorbachev's positions within the CPSU created more opportunities to travel abroad, which would profoundly affect his political and social views in the future as leader of USSR. In 1972, he headed a Soviet delegation to Belgium, in 1975, led a delegation to West Germany; in 1983 headed a delegation to Canada to meet with Prime Minister Pierre Trudeau and members of the Commons and Senate. In 1984, he travelled to the United Kingdom, where he met British Prime Minister Margaret Thatcher.
Upon Andropov's death in 1984, the aged Konstantin Chernenko took power; after his death the following year, it became clear to the communist party that younger leadership was needed. Gorbachev was elected General Secretary by the Politburo on 11March 1985, only three hours after Chernenko's death. Upon his accession at age 54, he was the youngest member of the Politburo.
References:
http://en.wikipedia.org/wiki/Mikhail_Gorbachev
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