Question

which of there factors contributed most to US westward expansion in the second half of the nineteenth century?

Answer 1

Development of more railroad systems contributed

most to US westward expansion in the second half of the nineteenth century.

The correct answer between all the choices given is the second choice or

letter B. I am hoping that this answer has satisfied your query and it will be

able to help you in your endeavor, and if you would like, feel free to ask

another question.