1. The Allied Victory in the Pacific: The Atomic Bomb

2. The Race for the Atomic Bomb Begins 1939-1941
By 1941, the Germans were leading the race for the atomic bomb.
They had a heavy-water plant, high-grade uranium compounds, a nearly complete cyclotron, capable scientists and engineers, and the greatest chemical engineering industry in the world.
The United States initiated its own program under the Army Corps of Engineers in June America needed to build an atomic weapon before Germany or Japan did.
It was a Top-Secret Project called The Manhattan Project

3. The Atomic Bomb
Developing the bomb took an incredible amount of money, resources, and science.
Roosevelt believed that Germany and Japan would use this type of bomb irresponsibly.
Therefore, the US had to develop it first

4. The Atomic Bomb
The process requires highly toxic elements such as plutonium and uranium.
These elements must undergo an intense chemical rearrangement by separating out their atoms to create another highly volatile element
Then these new scientifically created elements would be ignited and it would set off a chain reaction of atomic explosions

8. The Manhattan Project
After spending enormous sums of money, the Manhattan Project progressed to the test stage in May 1944.
Where do you test the deadliest bomb ever invented?
Needed to be a flat location
Isolated from people
And good weather and visibility to observe
New Mexico

12. The Manhattan Project The First Atomic Test
The Trinity Device being lifted to the top of the 100-foot steel tower. Ground Zero is at the base of the tower.
The First Atomic Device
On Monday, July 16, 1945, at 5:29:45 a.m., the first atomic device detonated at the Trinity Test Site

17. Hiroshima and Nagasaki
In the meantime, Roosevelt died and Harry Truman became the US President
He had to make a choice to invade Japan with the army and navy which would cost a lot of lives or use the new A-bomb and end the war quickly
Truman warned the Japanese that we would use a a new device that would “rain ruin from the air”
Japan did not reply

18. Hiroshima and Nagasaki
On August 6th 1945, the US dropped the first A-bomb on Hiroshima, a city with 350,000 people ,000 people died instantly from the attack.
On August 9th, the US dropped a second bomb on Nagasaki, a city with 270,000 people. Another 70,000 people died instantly
The Japanese finally surrendered to Gen. Douglas MacArthur on September 2nd 1945, bringing WWII finally to an end