Mikhail Gorbachev major campaign to limit alcohol consumption, which Gorbachev—who believed it would improve health and work efficiency—oversaw. His wife keenly supported the measure. As a result, crime rates fell and life expectancy grew slightly between 1986 and 1987. The reform had significant costs to the Soviet economy, resulting in losses of up to $100 billion between 1985 and 1990. Gorbachev later considered the campaign to have been an error. In April 1986 the Chernobyl disaster occurred; in the immediate aftermath, officials fed Gorbachev incorrect information to downplay the incident. As the scale of the disaster became apparent, 336,000 people were evacuated
Mikhail Gorbachev collapse moved toward social democracy. Of mixed Russian and Ukrainian heritage, Gorbachev was born in Privolnoye, Stavropol Krai to a peasant family. Growing up under the rule of Joseph Stalin, in his youth he operated combine harvesters on a collective farm before joining the Communist Party, which then governed the Soviet Union as a one-party state. While studying at Moscow State University, he married fellow student Raisa Gorbacheva in 1953 prior to receiving his law degree in 1955. Moving to Stavropol, he worked for the Komsomol youth organisation and became a keen proponent of the de-Stalinization reforms of Soviet leader