Answer:
1.Truman ordered the attack because Japan did not officially surrender.
2. During the time of the decision regarding bombs, Japan was already defeated.
3. Japan was not supposed to be bombed.
Step-by-step explanation:
Japan was already defeated in war but they did not give a reply to Truman's Postdam Declaration. This was the main reason why Japan was bombed.
In my personal opinion, the attack should have never happened because the casualties and destruction were enormous.
The reason not to bomb Japan:
After Truman ordered the attack on Hiroshima and Nagasaki, the bombs were dropped and Japan surrendered.
The casualties and the disaster could have been avoided by giving Japan more time to consider the facts and surrender officially.