Its history my bad What was the purpose of railroads giving secret rebates, or discounts, to their best customers?

It was a way to combine small lines into larger railroad companies.

It was an attempt to limit competition and keep most prices high.

It encouraged the addition of thousands of miles of new tracks.

I would say the third one

Explanation:

It just makes the most sense

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.