a. The speaker is Langston Hughes, an African American waiter. The main them here is about denouncing racism through his poem.
b. It is used in line 3 to talk about how people treat him.
c. When he says "they" he talks about the people that employed him, the relationship between these two pronouns, the author explains that he is discriminated by "they"; this relation is more and more denounced through the poem
d. He says " I, too, am American" because he dont understand why is he put apart in the society, just because for his skin color, but however they come from the same country so he wants the population to understand how black poeple felt
