1977 Constitution of the Soviet Union
The 1977 Soviet Constitution was the final constitution of the USSR in effect from 1977 until the Soviet Union was dissolved in 1991. It was also called the Constitution of Developed Socialism because the preamble to the 1977 Soviet Constitution says The aim of the dictatorship of the proletariat having been fulfilled, the Soviet State has become the state of the whole people, representing everyone, not just the workers and peasants alone The 1977 Constitution also led to some decentralization of powers from the central Soviet Communist Party to the governments underneath it. This constitution began to allow limited private enterprise, and loosened the hours citizens were required to work at state enterprises,  especially during the reign of Mikhail Gorbachev.