AP European History
Mikhail Gorbachev was the last General Secretary of the Communist Party of the Soviet Union and the first and only President of the Soviet Union, serving from 1985 until its dissolution in 1991. He is best known for introducing policies of glasnost (openness) and perestroika (restructuring), which aimed to reform the stagnant Soviet economy and promote greater transparency in government, ultimately leading to significant political and social changes that contributed to mass atrocities and upheavals in Eastern Europe and within the USSR itself.