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The most important reason is that if the Allies had not developed the atom bomb first, then the Axis powers would have done so. It was a race.
Shortly before Britain and France declared war on Germany, a letter was written by Albert Einstein (after prompting by some other physicists) for the attention of President Roosevelt of the USA detailing the possibility of using nuclear fission as a weapon. This letter stressed the urgency that this was developed before Nazi Germany did so and was actually delivered to the President after war had erupted in Europe.
It was eventually acted upon by the US government and the 'Manhattan Project' was set up. The very next day the Japanese attacked Pearl harbor and America was at war.
Once the atom bomb had been developed it was used to spare the lives of Allied soldiers who would have otherwise had to mount an invasion of the Japanese homeland to force their surrender (which would most likely have cost a large number of lives on both sides). Its use forced a speedy surrender by Japan and a resolution to the war. It can clearly be argued that this therefore actually saved many lives.
Of course the atom bomb was also used to demonstrate beyond all doubt to the world that the West now had a new weapon of immense power (but one would hope, and there is certainly no reason to believe otherwise, that the first reason was the primary one and that this second reason was merely a by-product). Of course, now the Russians saw the need to develop their own nuclear capability and so began an arms-race.
What else can I help you with?
Why Germany did not drop atomic bomb?
Germany never had an atomic bomb.
Was there any technology during the Holocaust?
Atomic Bomb Atomic Bomb
Why did they make the Atomic Bomb?
the atomic bomb was made to end the world war 2
Soviets explode their first atomic bomb?
when Soviets explode first atomic bomb
Is Nazi build atomic bomb?
the Nazi didn't build the atomic bomb the Americans did....
Reasons to drop the atomic bomb?
don't look at me, I don't know....
Did America attack Hiroshima with airplanes before the Atomic bombing?
No. That was one of the reasons it was a target for the atomic bomb. Any damage done had to be done by the single bomb.
What are the reasons for rejection of an international demonstration of the atomic bomb?
One was the possibility of a "fizzle". An atomic reaction without an explosion would impress no one.
How was an atomic bomb repaired?
how was the atomic bomb repaired
Is Pakistani bomb is an Islamic bomb?
If you consider the US atomic bomb is a Christian bomb, the French atomic bomb is also Christian bomb and so on, then you can name the Pakistani atomic bomb an Islamic bomb.
WHY was the first atomic bomb dropped on Hiroshima?
There were three or four reasons why but the main one was to end the war.
When did Pakistan explode their first atomic bomb?
18th May1998, but its not atomic bomb (its nuclear bomb)
Is there a timeline for the atomic bomb?
porket may atomic , bomb agad,
Why Germany did not drop atomic bomb?
Germany never had an atomic bomb.
Who created and used the atomic bomb?
the us created the atomic bomb
What reasons did the united states give for using the atomic bomb on japan?
Japan bombed Hawaii. (pearl harbor)
How did atomic theory lead to the atomic bomb discovery?
the atomic bomb was not discovered, it was invented then built.
