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In early 1939, scientists, Albert Einstein and Enrico Fermi, found out the Axis powers had discovered how to split a uranium atom
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During this time, scientists including Fermi and Einstein spent time convincing the president that the Axis Power's newfound discovery was a threat. President Roosevelt finally decided to slowly progress with research.
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In late 1941, the U.S. effort to build an atomic bomb got its name--The Manhattan Project.
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Hungarian physicist Edward Teller became an American Citizen and joined the Atomic Bomb Research Team. He and Enrico Fermi soon started collaborating and researching together often.
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Japanese planes bombed the U.S. naval base at Pearl Harbor, Hawaii. Soon after this, the United States entered the with as part of the Allied powers.
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Scientists at the University of Chicago produced the first controlled nuclear chain reaction--the first step to creating an atomic bomb
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Professor Glenn Seaborg left his position at the University of California at Berkeley to join the research of the Manhattan Project. Later on, he was the chairmen for the U.S.Atomic Energy Commission.
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At Trinity Site in New Mexico, the first atomic bomb test was conducted. The now-president, Harry S. Truman, was now faced with this decision: to drop the bomb or not.
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The U.S. plane Enola Gay dropped an atomic bomb on the Japanese city Hiroshima. 70,000 Japanese citizens were instantly killed due to burns and radiation.
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The U.S. dropped a bomb on another Japanese city--Nagasaki. 80,000 Japanese perished on this day.
