Answer:
"My Last Duchess” by Robert Browning is considered a dramatic monologue because the speaker reveals himself through his own words.
Step-by-step explanation:
"My Last Duchess” by Robert Browning is a dramatic monologue set in Renaissance Italy where the narrator expresses his own feelings and opinions about different areas of his life such as power, money, marriage, and his late wife who is the so-called "My Last Duchess”, then it follows the foundation of what a dramatic monologue is.