Final answer:
In Shakespeare's Othello, Iago spreads misinformation to manipulate characters and further his own agenda, as seen in the mentioned scene when he tells Roderigo that Cassio will replace Othello.
Step-by-step explanation:
In William Shakespeare's play Othello, Iago spreads misinformation to manipulate characters and further his own agenda. In the scene mentioned, Iago tells Roderigo that Cassio will replace Othello and Othello will go away. This is a part of Iago's plan to turn Roderigo against Cassio and Othello. By doing so, Iago creates conflicts and drives the plot forward.
This topic is relevant to the study of English literature, particularly the analysis of characters and themes in Shakespearean plays. Understanding the motives and actions of characters like Iago helps in interpreting the play's messages and themes.