What was one effect of the completion of the Great Northern Railway? a. The US military began to take a more active role in surveying and constructing railroad lines.
b. A pathway to Seattle was established, which allowed it to become a major American city.
c. . The Pacific Northwest had its first link to the transcontinental railroad, across the northern United States.
d. . Washington state finally had a railroad line that connected local lines to Tacoma and other big cities.

(Industrialization and it's impact in washington)