What is the coup d'etat? a. a rejection of the ideas of a government b. a sudden overthrow of an existing government c. a civil war between groups within a country d. a war against a country that used to be an ally

B. a sudden overthrow fo an exsisting government

Explanation:

you can infer this answer from the name in the being is says coup.

a coup is an overthrow of the government that was in place ( what happened in cuba)

i think they would live in caves or natural tunnels

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: