What effect is achieved by using a series of questions in Frederick Douglass's speech The hypocrisy of American Slavery?

In Frederick Douglass's speech "The Hypocrisy of American Slavery," the use of a series of questions serves to engage the audience emotionally and intellectually, prompting them to critically reflect on the contradictions of American values and the institution of slavery. This rhetorical technique emphasizes the moral dilemmas and injustices inherent in slavery, compelling listeners to confront uncomfortable truths about their society. Additionally, the questions create a sense of urgency and provoke introspection, challenging the audience to reconsider their complicity in the system of oppression. Overall, this method effectively amplifies Douglass's call for action and justice.