This is an example of an allusion , because the sentence is referring to an important political personality of the past (Socrates). The writer wants to underline the importance of Socrates contribution to the academic freedom.
Answer;
The event in Act IV that foreshadows Macbeth's eventual down fall is that;
Macduff discovers Macbeth has murdered his family and vows to kill Macbeth himself. <span>This is used to foreshadow an imminent conflict between Macbeth and Macduff.</span>
Explanation;
Foreshadowing is the use of indicative word or phrases and hints that set the stage for a story to unfold and give the reader a hint of something that will happen without revealing the story, or interfering with suspense.
History. "Marco Polo was the first to introduce the tasty..."
