What arguments could be made for using atomic bombs to end the war? what arguments could be made against using atomic weapons in the war?

The main argument in support of the decision to use the atomic bomb is that it saved American lives which would otherwise have been lost in two D-Day-style land invasions of the main islands of the Japanese homeland

in all honesty, it really hasn't. except that hitler killed himself.

answer; people where able to travel across the u.s.a faster than any other mode of transportation,travel time was about a week,from coast to coast