Final answer:
The conversation between the Old Man and Ross in Act II, Scene iv of 'The Tragedy of Macbeth' ties back to earlier events by reinforcing the theme of natural order disruption following Macbeth's regicide. It connects the unnatural events described by the Old Man to the rebellion against natural and moral order in Macbeth's actions and sets the stage for future turmoil in Scotland.
Step-by-step explanation:
The Old Man's conversation with Ross in Scene iv of Act II of The Tragedy of Macbeth provides a reflection on the unnatural events occurring alongside the political upheavals in Scotland. This dialogue serves as a thematic link to earlier scenes, emphasizing the disruption of the natural order and the moral chaos unleashed by Macbeth's regicide. The Old Man describes unnatural occurrences, like horses eating each other, which echo the defiance of natural order seen when Macbeth usurps the throne. The conversation foreshadows the continued instability and challenges to come, as those like Macduff begin to suspect the treachery behind Duncan's murder.
In referencing his own experiences, the Old Man implies that the current events surpass past horrors, signaling that Scotland is in the grip of unprecedented evil. This alludes to previous scenes, such as the witches' prophecies and Duncan bestowing the title of Cawdor on Macbeth, both of which hint at the coming turmoil. The thematic motif of good versus evil, natural versus unnatural, is woven throughout the dialogue, forming a continuous narrative thread from the opening to the tragic events unfolding in the play.