1. What was the Eastern bloc? the part of Europe that was a temporary Soviet occupation zone

the part of Germany and Poland occupied by the Soviets

the European nations that remained sovereign but became Communist

the European nations that were annexed by the Soviet Union

the European nations that were annexed by the Soviet Union

Explanation:

The Eastern Bloc were a group of communist states that were under the command and territory of the Soviet Union during the Cold War as an opposition to Western Capitalism.

Therefore, according to the answer choices, the Eastern Bloc were the the European nations that were annexed by the Soviet Union

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 because i tried to vote with just my college id and the answer was no