What changes are most likely to occur as a result of civil war

The correct answer to this open question is the following.

Although there are no options attached, we can say the following.

The changes that are most likely to occur as a result of civil war is a total recomposition of the powers that rule the government. Factions that fought during the war have to negotiate in order to establish a relative peace after so much death, destruction, and pain generated during the war. Socially, people have to overcome the trauma and losses provoked by the war. A period of mourning and reconstruction has to be followed, and then the faction that won the war has to start a period of "healing the wounds" and generate credibility for its government.  

the constitution gives congress the power to regulate commerce "among" the several states.