What is popular sovereignty?

a. a doctrine allowing new states to decide the issue of slavery for themselves.
b. an amendment to allow the direct election of u. s. senators.
c. a law requiring all states to assist in the return of runaway slaves to their owners.
d. a proposed constitutional amendment that would have allowed slavery in western territories.

a) A doctrine allowing new states to decide the issue of slavery for themselves.

It basically gave states the power to choose whether they wanted to be free or slave states.

d) iowa i believe is the answer

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.