Final answer:
Marc Antony's assertiveness peaks in Act V of Shakespeare's 'Julius Caesar', especially during the Battle of Philippi, reflecting his strategic prowess and political adaptability.
Step-by-step explanation:
The question concerns the comparison of Marc Antony's assertiveness in Act IV versus Act V of Shakespeare's play Julius Caesar.
In Act IV, Antony is seen consolidating power and forming the Second Triumvirate with Octavian and Lepidus. However, by Act V, Antony's assertiveness is more pronounced as he takes decisive action in the Battle of Philippi against Brutus and Cassius.
Furthermore, his actions in the aftermath illustrate his strong political acumen, as he negotiates with Octavian post-victory and demonstrates how to manage power and control over the Roman territories.
Antony's evolution from Act IV to Act V is indicative of his strategic mind and adaptability, traits that are vividly portrayed in Shakespeare's depiction of the historical events.