Much of what we know about ancient Greece and Rome is due to the A Vikings burning everything except for the libraries. B sections of Rome that were saved from the barbarians. C monks who preserved old texts. D Germanic tribes who retained Greco-Roman culture.

B sections of Rome that were saved from the barbarians.

Explanation:

Much of what we know about ancient Greece and Rome is due to the sections of Rome that were saved from the barbarians. The eastern part of Rome was saved from the invasion of the barbarians.

i also think it is c

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.