What was a result of the railroad construction shown on the map?
(1) A national market developed in the United States.
(2) Silver and gold mining opportunities decreased.
(3) Railroad companies gave free land to settlers.
(4) Steel factories relocated from the Great Lakes region to the Rocky Mountain states.
Assuming that this is referring to the same map that was posted before with this question, the correct response is "(4) Steel factories relocated from the Great Lakes region to the Rocky Mountain states."
