Answer:
In Lincoln's mind, the railroad was part of the Civil War effort. The new line would support communities and military outposts on the frontier. ... A transcontinental railroad, Lincoln hoped, would bring the entire nation closer together – would make Americans across the continent feel like one people.
Hope this helps
The Democratic Republican Party was founded based on the ideas of the Anti-Federalists, who were opposed to the ratification of the Constitution and were in favor of states' rights over federal rights.