According to the sequence of events described in the riddle of the rosetta stone, what leads the scholars to believe that the three inscriptions say the same thing in different languages?

Which best identifies the figurative language used in this passage? cannon to right of them, cannon to left of them, cannon in front of them volley’d and thunder’d; storm’d at with shot and shell, boldly they rode and well, into the jaws of death, into the mouth of hell rode the six hundred.