 Complete the following phrase:  At the age of 54, Mikhail Gorbachev was elected to the General Secretariat by the Politburo on 11 March 1985. In May 1985, Gorbachev publicly admitted the slowing down of the economic development and inadequate living standards, being the first Soviet leader to do so while also beginning a series of fundamental reforms. From 1986 to around 1988, he dismantled central planning, allowed state enterprises to set their own outputs, enabled private investment in businesses not previously permitted to be privately owned and allowed foreign investment, among other measures. He also opened up the management of and decision-making within the Soviet Union and allowed greater public discussion and criticism, along with a warming of relationships with the West. These twin policies were known as perestroika literally meaning reconstruction, though it varies and glasnost openness and transparency, respectively. The dismantling of the principal defining features of Soviet Communism in 1988 and 1989 in the Soviet Union led to the unintended consequence of the Soviet Union breaking up after the failed 