New inventons that changed American society during the late 1800's are steam power and electricity. The railroad helped expand the U.S.. The telegraph, the telephone, and the typewriter brought people together that were far away.
Initially, British and French commanders had believed that German forces would attack through central Belgium as they had in World War I, and rushed forces to the Franco-Belgian border to meet the German attack.
I’m not so sure about the north but i know that the south was very angry because they claimed it was an inaccurate depiction of slaveholders. I hope this helps!