From what I've read about the anti Japanese hysteria, racism was a big part taker. they often discriminated against non-white immigrants.
It is because the price of products dropped in the gilded age and that is because they made the transport of stuff and services way cheaper that lowered the cost to make them and therefor the price
Your answer is
<span>B.Railroads provided cheap and fast transportation for both raw materials and products.</span>
A is the answer to the question
