How did Gorbachev Glasnost and Perestroika impact the power and control of the Soviet Union? Help me pls

answer; ///i do believe that the correct answer for the above is ( which states would be free and which states would have check first good

it increase by 12% a year from 1812-1820

c. archbishop desmond tutu promoted the acknowledgement of the rights of black africans and expose human rights abuses.

d. leader haile selassie modernized african society through the institution of progressive social, economic, and educational reforms.

c) all of the above