Besides ending slavery the civil war had what result

Besides ending slavery, the civil war firmly redefined the United States as a single, indivisible nation rather than a loosely bound confederate. The victory of the Union meant that those that were seeking the separation of the United States lost to the unionists.

With combination of Great Depression and WW2 it contributed to pushing the American opinion and policy towards isolation. This ended until the Attack on Pearl Harbor making the United States join the WW2.