What contributed to the beginning of the decline of the Roman Empire?

Choose all answer that are correct.

Regardless of the strength of the emperors, the Roman army was unable to hold back barbarian invasions from the south and west.

Soldiers in the outer parts of the Roman Empire often supported local commanders instead of the emperor.

Incompetent rulers placed huge tax burdens on the Roman citizens.

The soldiers hired on the frontiers were not willing to go defend other parts of the empire.

B, C, D

Explanation:

I just took the test and those were the correct answers :D

answer: in october 1962, an american u-2 spy plane secretly photographed nuclear missile sites being built by the soviet union on the island of cuba. president kennedy did not want the soviet union and cuba to know that he had discovered the missiles. he met in secret with his advisors for several days to discuss the problem.

explanation:

donald carl johanson (born june 28, 1943) is an american paleoanthropologist. he is known for discovering – with yves coppens and maurice taieb – the fossil of a female hominin australopithecine known as "lucy" in the afar triangle region of hadar, ethiopia.

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i googled "who was kolson johanson" and this is the answer i found.

sorry if this is incorrect.