<prompt> Translate the following text to EnglishMwaka wa 1980, Poland ilipata mabadiliko makubwa katika sheria zake za kisiasa baada ya Mikhail Gorbachev kuanzisha perestroika na glasnost katika Muungano wa Sovieti, na kuahidi uhuru zaidi wa kiuchumi.  <response>: The mid-1980s witnessed a gradual program of liberalization in Poland on the heels of Mikhail Gorbachevs remarkable perestroika and glasnost in the Soviet Union, the promises of greater openness and economic freedoms. 