How many soldiers were killed, wounded, or missing in this battle? (how
many casualties were there? )

this is for the battle of fort sumter

Roughly 1,264,000 American soldiers have died in the nation's wars--620,000 in the Civil War and 644,000 in all other conflicts.  It was only as recently as the Vietnam War that the amount of American deaths in foreign wars eclipsed the number who died in the Civil War.

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