Final answer:
The soothsayer's warning in The Tragedy of Julius Caesar is foreshadowing the events that will unfold on the ides of March.
Step-by-step explanation:
The soothsayer's warning in The Tragedy of Julius Caesar is an example of foreshadowing. Foreshadowing is a literary device where the author hints at future events or outcomes. In this case, the soothsayer is warning Caesar to beware the ides of March, which foreshadows the assassination plot against Caesar that takes place on that day.
Learn more about foreshadowing in literature