Final answer:
The tone of the poem 'Frederick Douglass' by Paul Laurence Dunbar expresses the author's intent to reveal outrage at how people were treated and inspire others to take action.
Step-by-step explanation:
The tone of the poem 'Frederick Douglass' by Paul Laurence Dunbar expresses the author's intent by establishing a forceful tone of strength and power. This is evidenced by the use of words that reveal outrage at how people were treated. For example, the poem portrays the mistreatment of Frederick Douglass and his determination to overcome it through his own perseverance. The author's intention is to highlight the struggles and resilience of Douglass, inspiring others to take action.