In Marbury v. Madison, the supreme court affirmed its role in judicial review

restricted its own power

created the district courts to help ease the burden of the court cases

established the principle of rule of law

A (I'm pretty sure)

Explanation:

I think its A because we reviewed it in middle school but somebody tell me if I'm wrong

to reform the distraught soviet union, the democratization of the communist party was promoted through party secretary mikhail gorbachev's policies of “perestroika” and “glasnost.” perestroika refers to the reconstruction of the political and economic system established by the communist party.