Answer:
6 days.
Explanation:
Before completing the railroad, horses is the only alternative that the people have for road transportation. If we count the amount of time both the travelers and the horses need to rest, travelling across united states using horses could take up around 150 days. The train could cover the distance in only 6 days.
The completion of this railroad was really important for US' economy because it enable companies to distribute their goods to other states at a significantly cheaper price.
