Glasnost and Perestroika
Explanation: Mikhail Gorbachev has implemented and developed the Glasnost and Perestroika policy, with the goal of primarily reforming the economy and social relations in the Soviet Union. This entailed new ideas and openness, transparency in order to keep up with world conditions. This idea was actually designed by Brezhnev, that Gorbachev would begin to implement it, and the result was the collapse of the Soviet Union.
a justice system in the awnswer
b, public works good luck