I think it's definitely communism vs democracy. It is what lead the US into the Arms/Space race with Russia. The two forms of government were highly fearful of each other, such as the Red Scare in America.
New technologies like steam engines, railroads, and telegraphs made for communication and transportation easier. The ability to source and transport materials across the country with ease turned many local businesses into national companies.
Four score today Shows what the war had done to the civilians and how they can be better and make slavery not win to make the North win.<span />
1. the first constitution gave to much power to the states due to this problem.
