By 1988, Soviet leader Mikhail Gorbachev expanded his reforms to include the A
militarization of police forces.
B
nationalization of major industries.
C
increased control satellite states.
D
democratization of the political system.

option d is correct. corroborated sources of historical evidence   is necessary to validate a claim about an event in history.

historians tend to use written sources, but audio and visual materials as well as artifacts are important objects that supply information to modern historians.

historical sources are usually divided into two categories: primary and secondary sources. depending on the historian's intent, some sources shift their designation. determining what type of sources toimplement, and the level of credibility and reliability of those sources, is a significant step in critical thinking for the historian.

explanation:

a

explanation:

the supreme court can hear any case it wishes as long as four justices agree to hear it.

hope this , give me brainliest answer =j

b toward the volcano.landward. the landward side of something is the side nearest to the land or facing the land, rather than the sea.