it was done to spare American military from having to invade an island that was full of japs that would have fought the invasion . Also done because the USA wanted 'unconditional surrender' rather than having to negotiate with losers . No matter though , japs were nuked , results of the nuking were noted by scientists , USA won the war and the rest is history for me and tears for others . Mighta also been some revenge or justice for the sneak attack on Pearl Gipper !!
We did not need to invade dummy...the war was over. Japan was done and had been trying to surrender for nearly two years, prior to Truman's war crime. Incinerating women, children, and old men is what Truman did then he claimed the two cities were military bases...then claimed we needed to murder all those innocents to prevent 1 million deaths had we invaded...all bogus bullshit.
War is always the health of the state....stop believing the lies of the lying state.