Instead of coming to terms with each other in a suitable fashion, sectionalism drove each person to be "a member of their state", instead of being a "american". This led to conflicting interests, which boiled down to war. Each person went to war for reasons of their state, instead of what Lincoln wanted, the preservation of the Union.
In the case of the United States Government, implied powers are powers Congress exercises that the Constitution does not explicitly define, but are necessary and proper to execute the powers.
