The estimate were 100,000 casualties for the US.
Roosevelt seen that the US would loose way to many US troops against Japan, therefore used atomic weapons.
the decision to drop the bombs caused the Japanese surrender. This prevented massive casualties on both sides in the Operation Downfall invasion of Japan and from an otherwise prolonged war.
The intent was to shorten the war and negate the necessity of actually invading Japan with Allied troops. Japan's leaders did not believe it could be done twice -so the second bomb was released over Nagasaki.
Aug 6, '45 - Hiroshima and Aug 9 - Nagasaki Not dropped by US troops but by USAAF ( Army Air Forces ) bombers.
The atomic bombs were delivered by the USS Indianoppolis
It prevented a conventional invasion of Japan itself and the casualties that would have accompanied that invasion.
The reconstructing of Japan.
Roosevelt seen that the US would loose way to many US troops against Japan, therefore used atomic weapons.
No, in fact they were preparing for an invasion of mainland Japan.
There are currently about 48,000 US troops in Japan
An option was to send troops to the mainland but that option was not better than dropping the bombs.
the decision to drop the bombs caused the Japanese surrender. This prevented massive casualties on both sides in the Operation Downfall invasion of Japan and from an otherwise prolonged war.
The intent was to shorten the war and negate the necessity of actually invading Japan with Allied troops. Japan's leaders did not believe it could be done twice -so the second bomb was released over Nagasaki.
Aug 6, '45 - Hiroshima and Aug 9 - Nagasaki Not dropped by US troops but by USAAF ( Army Air Forces ) bombers.
to end the war without having to invade japan, thus saving millions of lives both of US troops and japanese civilians and troops. also hopefully preventing the USSR from invading, resulting in a postwar divided japan, as was already the case in germany and other places.
The atomic bombs were delivered by the USS Indianoppolis
It didn't. Japan existed long before the atomic bomb