Why is it a mystery. please help me fast and show all your work please thx.

It is a mystery because the USS Cyclops did not radio to anyone that they were going down.

Explanation:

I hope this helps!

:)

a caption indicating the purpose of the diagram

explanation:

cassius, casca, and their allies plant false documents to manipulate brutus to join their cause to remove caesar. after doing so, they visit brutus at night in his home to persuade him of their views. there they plan caesar's death. brutus is troubled but refuses to confide in his devoted wife, portia. on 15 march, caesar's wife, calpurnia, urges him not to go to the senate. she has had visionary dreams and fears the portents of the overnight storms.