What does a reader learn about a story by its tone

Mood, and author's purpose

Explanation:

The mood of a story can be found by identifying the tone. Often times the tone portrays how the author wants you to feel.

the answer is:  

he is voicing feelings shared by all humans regardless of race.

in paul laurence dunbar's poem "we wear the mask," he replicates the words mask and we to emphasize how people in general -not just black americans- hide their true feelings. he suggests the masks cover people's faces and eyes, which are the main parts that display their emotions. he also thinks people's pain conceal behind those masks, so that they cannot see reality and nobody is able to see one another's sorrow.

you can infer that to folke dude was spying for allied nations